WO2022116937A1 - 一种通信方法、系统及装置 - Google Patents

一种通信方法、系统及装置 Download PDF

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Publication number
WO2022116937A1
WO2022116937A1 PCT/CN2021/133995 CN2021133995W WO2022116937A1 WO 2022116937 A1 WO2022116937 A1 WO 2022116937A1 CN 2021133995 W CN2021133995 W CN 2021133995W WO 2022116937 A1 WO2022116937 A1 WO 2022116937A1
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WIPO (PCT)
Prior art keywords
group
synchronization signal
head
devices
head device
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PCT/CN2021/133995
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English (en)
French (fr)
Inventor
彭兰
李雪茹
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华为技术有限公司
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Priority to EP21899969.6A priority Critical patent/EP4240071A1/en
Publication of WO2022116937A1 publication Critical patent/WO2022116937A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W56/00Synchronisation arrangements
    • H04W56/001Synchronization between nodes
    • H04W56/002Mutual synchronization
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W56/00Synchronisation arrangements
    • H04W56/001Synchronization between nodes

Definitions

  • the present application relates to the field of communication technologies, and in particular, to a communication method, system, and device.
  • SL Sidelink
  • D2D device to device communication
  • V2X vehicle to everything
  • SL generally occupies licensed (license) spectrum, which needs to be coordinated with the spectrum resources of long term evolution (LTE)/new radio (NR) network, resulting in limited scenarios for SL use, and high speed. cannot be improved further.
  • Unlicensed (Unlicense) spectrum is open and can be used effectively to improve performance and speed.
  • the unlicensed nature of the Unlicense spectrum enables all systems to transmit and compete for resources on it. Therefore, it is also considered to make the SL occupy the unlicense spectrum, which may be called sidelink-unlicense (SL-U).
  • SL-U the mechanism of operating in units of groups has become the main research target, that is, multiple user equipments (UEs) form a group and operate in units of groups. Taking the group as a unit, it can well support the local team scene.
  • UEs user equipments
  • Embodiments of the present application provide a communication method, system, and device, which are used to provide a manner of inter-group synchronization after grouping exists.
  • a first communication method includes: a first group of head devices generates a first synchronization signal, the first synchronization signal includes first indication information, an identifier of the first group, and resource information occupied by the first group, the first indication information It is used to indicate that the first synchronization signal is used for synchronization between group head devices of different groups, the first group head device belongs to the first group, and the first group further includes M group member devices.
  • the first group head device is used to manage the M group member devices, where M is a natural number; the first group head device sends the first synchronization signal, and the first synchronization signal is an aperiodic signal;
  • a second group of head devices receives the first synchronization signal from the first group of head devices, the second group of head devices belongs to a second group, the second group further includes N group member devices, and the first group of head devices belongs to the second group.
  • the second group head device is used to manage the N group member devices, the first group and the second group have different group identifiers, where N is a natural number.
  • the first group head device in the first group may send a first synchronization signal, the first synchronization signal is used for synchronization between group head devices of different groups, and the first synchronization signal passes through the first synchronization signal.
  • the indication information can indicate the purpose of the first synchronization signal. If the group head devices of other groups receive the first synchronization signal, they can synchronize with the first group head device according to the first synchronization signal. In this embodiment of the present application, it is not necessary to set the synchronization priority of the UE, so that the group head devices of each group can theoretically be synchronized.
  • the first synchronization signal may also include resource information occupied by the first group, so that the group head devices of other groups can not only synchronize with the first group head device according to the first synchronization signal, but also avoid the resources occupied by the first group. , which can reduce interference between groups and improve communication reliability.
  • the first synchronization signal is an aperiodic signal.
  • the first synchronization signal can be triggered by an event or by other means, which reduces the limitation of periodically sending the synchronization signal and increases the synchronization opportunity between the group head devices.
  • the method further includes: a group member device receiving the first synchronization signal from the first group head device, and the group member device receives the first synchronization signal from the first group head device.
  • the device is one of the M group member devices, or the group member device is one of the N group member devices, or the group member device belongs to a group other than the first group and the second group
  • the group member device does not respond to the first synchronization signal according to the first indication information.
  • the group member device may also receive the first synchronization signal. For a group member device, if it receives the first synchronization signal, it may not respond to the first synchronization signal.
  • the group member device only needs to synchronize with the group head device in the group where the group member is located, and does not need to respond to the synchronization signal used for inter-group synchronization, so as to avoid confusion in the synchronization process of the group member equipment.
  • the group member devices do not need to respond to signals from other group devices, which is simpler for the group member devices to implement.
  • the method further includes: the first group of head devices sending a second synchronization signal, the second synchronization signal is used for the synchronization of the M group member devices and the first group head device; the group member device receives the second synchronization signal from the first group head device; The group member device synchronizes with the first group head device according to the second synchronization signal.
  • the synchronization signal for inter-group synchronization and the synchronization signal for intra-group synchronization can also be sent, which expands the function of the group head device.
  • both intra-group synchronization and inter-group synchronization can be realized, so that each device in a group and inter-group devices can be better synchronized, reducing the probability of resource collision and improving communication performance.
  • the method further The method includes: in the case that the second group head device does not cooperate with any other group head device, the second group head device synchronizes with the first group head device according to the first synchronization signal. If the second group head device is already cooperating with one or more group head devices other than the first group head device, then cause the second group head device to cooperate with the second group head device if it is to synchronize with the first group head device The first group head device also needs to be synchronized with the first group head device, and the process is more complicated and takes a long time.
  • the second group head device may be synchronized with the first group head device to achieve synchronization of the first and second groups.
  • the method further includes: in the case that the second group of head devices does not cooperate with any other group of head devices, the second group of head devices does not occupy the space occupied by the first group. resource.
  • the head devices of the second group are not only synchronized with the head devices of the first group. It is also possible to avoid the resources occupied by the first group, that is, for the resources occupied by the first group, the head devices of the second group may not occupy the resources, and the head devices of the second group may also instruct the member devices in the second group not to occupy these resources. , thereby reducing the probability of resource collision.
  • the method further This includes: in the case that the second group head device has cooperated with one or more other group head devices, the second group head device does not respond to the first synchronization signal. If the second group head device is already cooperating with one or more group head devices other than the first group head device, then cause the second group head device to cooperate with the second group head device if it is to synchronize with the first group head device The first group head device also needs to be synchronized with the first group head device, and the process is more complicated and takes a long time.
  • the second group head device may not respond to the first synchronization signal and not cooperate with the first group head device.
  • Device synchronization to simplify the synchronization process. For example, the second group of head devices may discard the first synchronization signal.
  • the method further includes: the second group of head devices sending a third synchronization signal, the The third synchronization signal includes second indication information, an identifier of the second group, and resource information occupied by the second group, where the second indication information is used to indicate that the third synchronization signal is used for groups of different groups Synchronization between head devices.
  • the second group head device Because the second group head device has cooperated with some group head devices, the second group head device does not respond to the first synchronization signal, and the second group head device can also send a third synchronization signal, so that the group receiving the third synchronization signal
  • the head device can be synchronized with the second group of head devices, so that more group head devices can be synchronized.
  • the sending of the first synchronization signal by the first group of head devices includes: the first group of head devices sending the first synchronization signal to the second group of head devices; or, The first group head device sends the first synchronization signal to the second group head device and the M group member devices; or the first group head device sends the first synchronization signal to multiple or, the first group head device broadcasts the first synchronization signal.
  • the first group head device may send the first synchronization signal in a unicast manner, for example, the first synchronization signal may be sent to the second group head device, or the first synchronization signal may be sent to multiple group head devices, or Sending the first synchronization signal to the second group head device and the M group member devices, etc., and sending the first synchronization signal in a unicast manner can make the transmission of the first synchronization signal more targeted.
  • the first group of head devices may also send the first synchronization signal in a broadcast manner to save signaling overhead.
  • the sending of the first synchronization signal by the first group of head devices includes: in the case of an idle state, the first group of head devices sends the first synchronization signal; or, after determining In the case of interference from outside the group, the first group head device sends the first synchronization signal; or, when the first group is constructed, the first group head device sends the first synchronization signal Signal.
  • the first group of head devices may periodically send the first synchronization signal, or may also send the first synchronization signal when triggered by an event.
  • the event is, for example, an event in which the first group of head devices is in an idle state, or an event in which the first group of head devices is interfered by outside the group, or an event in which the first group has been constructed.
  • the event of sending the first synchronization signal by the head device is not limited. By triggering the sending of the first synchronization signal by an event, the first synchronization signal is no longer subject to the period, which makes the sending of the first synchronization signal more flexible and increases the chance of synchronization between groups.
  • the method further includes: changing the group member device to a group head device of the first group; the group member device sending a fourth synchronization signal, and the fourth synchronization signal includes a third indication information, the identifier of the first group, and the resource information occupied by the first group, the third indication information is used to indicate that the fourth synchronization signal is used for synchronization between group head devices of different groups, so
  • the fourth synchronization signal is an aperiodic signal.
  • the member device only needs to perform the task of the group head device.
  • the group member device can also send a synchronization signal for inter-group synchronization, and can also receive synchronization signals for inter-group synchronization from group head devices of other groups. If it receives a synchronization signal for inter-group synchronization, Then the processing method is similar to the processing method of the aforementioned second group of head devices.
  • the group member device may also send a synchronization signal for intra-group synchronization, so that the other group member devices in the first group are synchronized with the group member device. It can be seen that the roles of each device in the embodiment of the present application can be adjusted, and the user can change the roles of the devices in the group according to different requirements, so as to obtain a better experience.
  • the first synchronization signal is carried over a broadcast channel.
  • the broadcast channel carries a MIB-SL
  • the MIB-SL includes the first synchronization Signal.
  • a sending manner of the first synchronization signal is given above, in addition to this, the first synchronization signal may also be carried by other channels.
  • a second communication method is provided, and the method can be executed by a group head device or by a chip system capable of implementing the functions of the group head device, such as the first group head device.
  • the method includes: a first group of head devices generates a first synchronization signal, the first synchronization signal includes first indication information, an identifier of the first group, and resource information occupied by the first group, the first indication information It is used to indicate that the first synchronization signal is used for synchronization between group head devices of different groups, the first group head device belongs to the first group, and the first group further includes M group member devices.
  • the first group head device is used to manage the M group member devices, where M is a natural number; the first group head device sends the first synchronization signal, and the first synchronization signal is an aperiodic signal.
  • the method further includes: sending, by the first group of head devices, a second synchronization signal, where the second synchronization signal is used for the M synchronization of each group member device with the first group head device.
  • sending the first synchronization signal by the first group of head devices includes: The first group head device sends the first synchronization signal to the second group head device; or the first group head device sends the first synchronization signal to the second group head device and the M group member devices; or, the first group head device broadcasts the first synchronization signal.
  • the first Sending the first synchronization signal by the group head device includes: in the case of being in an idle state, the first group head device sending the first synchronization signal; or, in the case of determining that it is interfered by outside the group, the The first group of head devices sends the first synchronization signal; or, when the first group is constructed, the first group of head devices sends the first synchronization signal.
  • the fourth optional embodiment of the second aspect In combination with the second aspect or any one of the optional embodiments from the first optional embodiment of the second aspect to the third optional embodiment of the second aspect, the fourth optional embodiment of the second aspect In an optional embodiment, the first synchronization signal is carried over a broadcast channel.
  • the broadcast channel carries an MIB-SL
  • the MIB-SL includes the first synchronization signal .
  • a third communication method is provided, and the method can be performed by a group head device or by a chip system capable of implementing the functions of the group head device, such as the second group head device.
  • the method includes: the second group of head devices receives a first synchronization signal from the first group of head devices, where the first synchronization signal includes first indication information, an identifier of the first group, and a space occupied by the first group Resource information, the first indication information is used to indicate that the first synchronization signal is used for synchronization between group head devices of different groups, the first synchronization signal is an aperiodic signal, and the first group head
  • the device belongs to the first group, the first group further includes M group member devices, the first group head device is used to manage the M group member devices, and the second group head device belongs to the second group, so
  • the second group also includes N group member devices, the second group head device is used to manage the N group member devices, the first group and the second group have different group identifiers, wherein M and N are
  • the method further includes: in the case that the second group head device does not cooperate with any other group head device, the first The second group of head devices are synchronized with the first group of head devices according to the first synchronization signal.
  • the method further includes: when the second group of head devices is not connected with other When any group head device cooperates, the second group head device does not occupy the resources occupied by the first group.
  • the method further includes: in the case that the second group head device has cooperated with one or more other group head devices, The second group of head devices does not respond to the first synchronization signal.
  • the method further includes: the second group of head devices sends a third synchronization signal, the The third synchronization signal includes second indication information, an identifier of the second group, and resource information occupied by the second group, where the second indication information is used to indicate that the third synchronization signal is used for groups of different groups Synchronization between head devices.
  • the first The synchronization signal is carried over the broadcast channel.
  • the broadcast channel carries an MIB-SL
  • the MIB-SL includes the first synchronization signal .
  • a fourth communication method is provided, and the method can be executed by a team member device, or executed by a chip system, and the chip system can realize the function of the team member device.
  • the method includes: a group member device receives a first synchronization signal from a first group head device, the first group head device belongs to a first group, the first group includes M group member devices, and the first group head device The device is used to manage the M group member equipment, the group member equipment is one of the M group member equipment, or the group member equipment belongs to other groups except the first group, the first group member equipment
  • a synchronization signal includes first indication information, an identifier of the first group, and resource information occupied by the first group, where the first indication information is used to indicate that the first synchronization signal is used for group headers of different groups
  • the first synchronization signal is an aperiodic signal, and M and N are both natural numbers; the group member device does not respond to the first synchronization signal according to the first indication information.
  • the method further includes: the group member device receiving a second synchronization signal from the first group head device, the second synchronization signal The synchronization signal is used to synchronize the M group member devices with the first group head device; the group member device synchronizes with the first group head device according to the second synchronization signal.
  • the method further includes: changing the team member equipment to the first optional implementation manner The group head device of the group; the group member device sends a fourth synchronization signal, where the fourth synchronization signal includes third indication information, the identifier of the first group, and the resource information occupied by the first group, the The third indication information is used to indicate that the fourth synchronization signal is used for synchronization between group head devices of different groups, and the fourth synchronization signal is an aperiodic signal.
  • the first The synchronization signal is carried over the broadcast channel.
  • the broadcast channel carries an MIB-SL
  • the MIB-SL includes the first synchronization signal .
  • a communication device may be the first group of head devices described in any one of the above-mentioned first to fourth aspects.
  • the communication device has the function of the above-mentioned first group head device.
  • the first group of head devices is implemented by terminal devices.
  • the communication device includes a baseband device and a radio frequency device.
  • the communication apparatus includes a processing unit (sometimes also called a processing module) and a transceiver unit (sometimes also called a transceiver module). The transceiver unit can realize the sending function and the receiving function.
  • the transceiver unit When the transceiver unit realizes the sending function, it can be called the sending unit, and when the transceiver unit realizes the receiving function, it can be called the receiving unit.
  • the sending unit and the receiving unit can be the same functional module, which is called a transceiver unit, and this functional module can realize the sending function and the receiving function; or, the sending unit and the receiving unit can be different functional modules, and the transceiver unit is the The collective name for functional modules.
  • the processing unit is configured to generate a first synchronization signal, where the first synchronization signal includes first indication information, an identifier of a first group, and resource information occupied by the first group, the first indication information It is used to indicate that the first synchronization signal is used for synchronization between group head devices of different groups, the first group head device belongs to the first group, and the first group further includes M group member devices.
  • the first group head device is used to manage the M group member devices, where M is a natural number;
  • the transceiver unit is configured to send the first synchronization signal, where the first synchronization signal is an aperiodic signal (or, the sending unit is configured to send the first synchronization signal, the first synchronization signal The signal is an aperiodic signal; or, the processing unit is further configured to send the first synchronization signal through the transceiver unit, where the first synchronization signal is an aperiodic signal).
  • the communication device includes a storage unit and a processing unit, and the processing unit is configured to couple with the storage unit and execute programs or instructions in the storage unit to enable the communication device to perform the above The functions of the first set of head devices.
  • the communication device may be the second group of head devices described in any one of the above-mentioned first to fourth aspects.
  • the communication device has the function of the above-mentioned second group head device.
  • the second group of head devices is implemented by terminal devices.
  • the communication device includes a baseband device and a radio frequency device.
  • the communication apparatus includes a processing unit (sometimes also called a processing module) and a transceiver unit (sometimes also called a transceiver module).
  • a processing unit sometimes also called a processing module
  • transceiver unit sometimes also called a transceiver module
  • the transceiver unit (or the sending unit) is configured to receive a first synchronization signal from the head device of the first group, where the first synchronization signal includes first indication information, an identifier of the first group, and resource information occupied by the first group, where the first indication information is used to indicate that the first synchronization signal is used for synchronization between group head devices of different groups, and the first synchronization signal is aperiodic signal,
  • the head device of the first group belongs to the first group
  • the first group further includes M member devices
  • the head device of the first group is used to manage the M member devices
  • the second group The head device belongs to a second group
  • the second group further includes N group member devices
  • the second group head device is used to manage the N group member devices
  • the first group and the second group have Different group identifiers, where M and N are both natural numbers.
  • the processing unit is configured to receive, through the transceiver unit, a first synchronization signal from the head device of the first group, where the first synchronization signal includes first indication information, an identifier of the first group, and the Resource information occupied by the first group, the first indication information is used to indicate that the first synchronization signal is used for synchronization between group head devices of different groups, and the first synchronization signal is an aperiodic signal, so
  • the first group of head devices belongs to the first group, the first group further includes M group member devices, the first group of head devices is used to manage the M group member devices, and the second group of head devices belongs to The second group, the second group further includes N group member devices, the second group head device is used to manage the N group member devices, the first group and the second group have different groups identity, where M and N are both natural numbers.
  • the communication device includes a storage unit and a processing unit, and the processing unit is configured to couple with the storage unit and execute programs or instructions in the storage unit to enable the communication device to perform the above The functions of the second set of head devices.
  • the communication device may be the group member device described in any one of the above-mentioned first to fourth aspects.
  • the communication device has the function of the above-mentioned group member device.
  • the group member device is implemented by a terminal device.
  • the communication device includes a baseband device and a radio frequency device.
  • the communication apparatus includes a processing unit (sometimes also called a processing module) and a transceiver unit (sometimes also called a transceiver module).
  • a processing unit sometimes also called a processing module
  • transceiver unit sometimes also called a transceiver module
  • the transceiver unit (or the receiving unit) is configured to receive a first synchronization signal from a first group of head devices, where the first group of head devices belongs to a first group, and the first group includes M Group member equipment, the first group head equipment is used to manage the M group member equipment, and the group member equipment is one of the M group member equipment, or the group member equipment belongs to a group other than the first group member equipment.
  • the first synchronization signal includes first indication information, an identifier of the first group, and resource information occupied by the first group, where the first indication information is used to indicate the first
  • the first synchronization signal is used for synchronization between group head devices of different groups, the first synchronization signal is an aperiodic signal, and M and N are both natural numbers;
  • the processing unit is configured to not respond to the first synchronization signal according to the first indication information.
  • the processing unit is configured to receive, through the transceiver unit, a first synchronization signal from a first group of head devices, where the first group of head devices belongs to a first group, and the first group includes M member devices, so The first group head device is used to manage the M group member devices, and the group member device is one of the M group member devices, or the group member device belongs to another group except the first group group, the first synchronization signal includes first indication information, an identifier of the first group, and resource information occupied by the first group, where the first indication information is used to indicate that the first synchronization signal is used for For synchronization between group head devices of different groups, the first synchronization signal is an aperiodic signal, and M and N are both natural numbers;
  • the processing unit is further configured to not respond to the first synchronization signal according to the first indication information.
  • the communication device includes a storage unit and a processing unit, and the processing unit is configured to couple with the storage unit and execute programs or instructions in the storage unit to enable the communication device to perform the above The function of the team member's device.
  • a communication system may include the communication device of the fifth aspect and the communication device of the sixth aspect.
  • the communication system may further include the communication apparatus described in the seventh aspect.
  • the communication system may further include the first group described in any one of the first aspect to the fourth aspect.
  • the communication system may further include the second group described in any one of the first aspect to the fourth aspect.
  • a computer-readable storage medium is provided, the computer-readable storage medium is used to store a computer program or an instruction that, when executed, enables the method performed by the group head device or the group member device in the above aspects is realized.
  • a computer program product comprising instructions which, when run on a computer, cause the methods of the above aspects to be implemented.
  • Fig. 1 is the structural representation of side row SSB
  • FIG. 2 is a schematic diagram of an application scenario of an embodiment of the present application
  • FIG. 3 is a flowchart of a communication method provided by an embodiment of the present application.
  • 5 is a schematic diagram illustrating that the resources of group A and the resources of group C do not overlap in an embodiment of the present application
  • FIG. 6 is a schematic diagram of overlapping resources of group A and resources of group B in an embodiment of the present application
  • FIG. 7 is a schematic block diagram of a communication apparatus provided by an embodiment of the present application.
  • FIG. 8 is a schematic block diagram of a terminal device provided by an embodiment of the present application.
  • a terminal device is a device with a wireless transceiver function, which may be a fixed device, a mobile device, a handheld device (such as a mobile phone), a wearable device, a vehicle-mounted device, or a wireless device (such as a built-in wireless device in the above-mentioned device). , communication modules, modems, or systems on a chip, etc.).
  • the terminal device is used to connect people, things, machines, etc., and can be widely used in various scenarios, such as but not limited to the following scenarios: cellular communication, device-to-device communication (device-to-device, D2D), vehicle-to-everything (vehicle to everything, V2X), machine-to-machine/machine-type communications (M2M/MTC), Internet of things (internet of things, IoT), virtual reality (virtual reality, VR) , Augmented reality (AR), industrial control (industrial control), unmanned driving (self driving), telemedicine (remote medical), smart grid (smart grid), smart furniture, smart office, smart wear, smart transportation , terminal equipment for smart city, drone, robot and other scenarios.
  • cellular communication device-to-device communication
  • vehicle-to-everything vehicle to everything, V2X
  • M2M/MTC machine-to-machine/machine-type communications
  • IoT Internet of things
  • virtual reality virtual reality
  • AR Augmented reality
  • the terminal equipment may sometimes be referred to as a UE, a terminal, an access station, a UE station, a remote station, a wireless communication device, a user equipment, or the like.
  • a UE a terminal
  • an access station a UE station
  • a remote station a wireless communication device
  • a user equipment a user equipment, or the like.
  • the embodiment of the present application uses a UE as an example to describe the terminal device.
  • the number of nouns means “singular nouns or plural nouns", that is, “one or more”. "At least one” means one or more, and “plurality” means two or more. "And/or”, which describes the relationship of the associated objects, indicates that there can be three kinds of relationships, for example, A and/or B, it can indicate that A exists alone, A and B exist at the same time, and B exists alone, where A, B can be singular or plural.
  • the character “/" generally indicates that the associated objects are an "or” relationship. For example, A/B, means: A or B.
  • At least one item(s) below or similar expressions thereof refer to any combination of these items, including any combination of single item(s) or plural items(s).
  • at least one of a, b, or c means: a, b, c, a and b, a and c, b and c, or a and b and c, where a, b, c Can be single or multiple.
  • first and second mentioned in the embodiments of the present application are used to distinguish multiple objects, and are not used to limit the size, content, order, timing, priority, or importance of multiple objects.
  • first synchronization signal and the second synchronization signal may be the same synchronization signal or different synchronization signals, and this name does not indicate the size, content, transmission order, priority of the two synchronization signals. level or importance.
  • SL is an important branch of cellular IoT technology called D2D.
  • D2D the existence of this technology has created broad application prospects for IoT applications, subverting the traditional cellular network communication architecture and even operations.
  • V2X is also an extension and technological evolution of scenarios based on the SL-based architecture.
  • SL generally occupies the license spectrum, which needs to be coordinated with the spectrum resources of the LTE/NR network.
  • the unlicense spectrum is open and can be used effectively to improve performance and speed.
  • the unlicensed nature of the Unlicense spectrum enables all systems to transmit and compete for resources on it. Therefore, it is also considered to make the SL occupy the unlicense spectrum, which may be called sidelink-unlicense (SL-U).
  • SL-U the mechanism of operating in a group unit has become the main research target, that is, a plurality of UEs form a group and operate in a group unit.
  • some typical scenarios in groups include:
  • UEs in a family can form a group. These UEs include, for example, one or more of a mobile phone, a television, a personal computer (PC), a tablet computer (PAD), a speaker, a smart bracelet, or a headset.
  • PC personal computer
  • PAD tablet computer
  • speaker a smart bracelet
  • headset a headset
  • Conference room scenario Multiple UEs in a conference room can form a group. These UEs include, for example, one or more of devices such as large-screen devices, PCs, mobile phones, or tablet computers.
  • Team game scenario If multiple people form a team to play a team game, then multiple devices (such as mobile phones, PCs, or tablet computers, etc.) used by the multiple people can form a group.
  • devices such as mobile phones, PCs, or tablet computers, etc.
  • the group head device can also obtain information such as channel information and service load of each group member device in the group, which can better perform link control and improve SL communication performance.
  • the existing sideline synchronization mechanism can make two out-of-synchronization UEs complete synchronization.
  • FIG. 1 it is the structure of the existing sideline synchronization signal and physical broadcast channel block (synchronization signal and PBCH block, SSB).
  • the sidelink primary synchronization signal (S-PSS) and the sidelink secondary synchronization signal (S-SSS) in Figure 1 are both synchronization sequences responsible for synchronization.
  • a physical sidelink broadcast channel (PSBCH) can carry a master information block (MIB)-SL, including some time domain synchronization information.
  • MIB master information block
  • GAP in FIG. 1 represents a gap.
  • the existing sideline synchronization mechanism has some problems.
  • the synchronization priority is set for different UEs respectively.
  • the synchronization priority is related to the synchronization source of the UE. If the synchronization source of the UE is different, the synchronization priority is May be different.
  • the synchronization source of UE1 is a base station, and the synchronization source of UE2 is a satellite, then the synchronization priority of UE1 may be higher than that of UE2.
  • a UE with a lower synchronization priority can synchronize with a UE with a higher synchronization priority.
  • the two UEs may not synchronize with each other, so that the two UEs cannot complete synchronization. Therefore, the current sideline synchronization mechanism cannot be applied to synchronization between UEs after the concept of a group is proposed.
  • synchronization between UEs includes synchronization within a group.
  • the embodiments of the present application propose that, for a group, the group head device of the group can periodically send a synchronization signal and a physical broadcast channel block (synchronization signal and PBCH block, SSB), and the group member devices of the group can monitor The SSB from the group head device, so that each member device of the group can be synchronized with the group head device of the group.
  • the group member devices of this group do not need to monitor other synchronization information outside the group, thereby maintaining the independence of a group and achieving energy saving.
  • energy saving can also be achieved by reducing the transmission power.
  • the inter-group synchronization also uses the same SSB as the intra-group synchronization, that is, the SSB sent by the group head device of a group can be used not only for intra-group synchronization, but also for inter-group synchronization.
  • the head device will reduce power when sending SSB, which may cause devices in other groups to fail to receive the SSB, making it impossible to achieve synchronization between groups.
  • due to the periodic configuration of the existing SSB it is very likely that synchronization between groups cannot be achieved.
  • the embodiment of the present application further provides a method for synchronizing between the group head devices of each group, and the synchronization of the group head device is completed, which is regarded as the synchronization between the groups.
  • the first group head device in the first group may send a first synchronization signal
  • the first synchronization signal is used for synchronization between group head devices of different groups
  • the first synchronization signal passes through the first synchronization signal.
  • the indication information can indicate the purpose of the first synchronization signal. If the group head devices of other groups receive the first synchronization signal, they can synchronize with the first group head device according to the first synchronization signal.
  • the first synchronization signal may also include resource information occupied by the first group, so that the group head devices of other groups can not only synchronize with the first group head device according to the first synchronization signal, but also avoid the resources occupied by the first group. , which can reduce interference between groups and improve communication reliability.
  • the first synchronization signal is an aperiodic signal.
  • the first synchronization signal can be triggered by an event or by other means, which reduces the limitation of periodically sending the synchronization signal and increases the synchronization opportunity between the group head devices.
  • the technical solutions provided in the embodiments of the present application can be applied to a fourth generation mobile communication technology (the 4th generation, 4G) system, such as an LTE system, or can be applied to a 5G system, such as an NR system, or can also be applied to the next generation
  • 4G fourth generation mobile communication technology
  • LTE long term evolution
  • 5G 5th generation
  • NR NR
  • the mobile communication system or other similar communication systems are not specifically limited.
  • the technical solutions provided in the embodiments of the present application may be applied to a device-to-device (device-to-device, D2D) scenario, such as an NR-D2D scenario, etc., or may be applied to a V2X scenario, such as an NR-V2X scenario, etc., for example, applicable In the Internet of Vehicles, such as V2X, vehicle-to-vehicle (V2V), etc., or can be used in areas such as intelligent driving, assisted driving, or intelligent networked vehicles.
  • D2D device-to-device
  • V2X vehicle-to-vehicle
  • V2V vehicle-to-vehicle
  • FIG. 2 is a schematic diagram of an application scenario of an embodiment of the present application.
  • Figure 2 includes 2 groups, which are called group A and group B, respectively.
  • the group A includes multiple UEs
  • the group B includes multiple UEs.
  • the UE is a mobile phone as an example.
  • a UE in group A serves as the group head device of group A, for example, the UE is called group head device A; a UE in group B serves as the group head device of group B, and the UE is called group head device B, for example.
  • FIG. 3 is a flowchart of the method.
  • the method is applied to the network architecture shown in FIG. 2 as an example.
  • the frequency domain resources used by each group are, for example, resources of unlicensed spectrum, or may also be resources of licensed spectrum.
  • the first group of head devices generates a first synchronization signal, or in other words, the first group of head devices determines the first synchronization signal.
  • the first group head device is a group head device in the first group, and the first group head device can be used to manage the group member devices in the first group.
  • the management method includes, for example, allocating resources to the group member devices in the first group.
  • the first group includes M member devices, the head device of the first group can manage the M member devices, and M is a natural number. If the technical solutions provided by the embodiments of the present application are applied to the scenario shown in FIG. 2 , the first group is, for example, group A in FIG. 2 , and the first group head device is, for example, group head device A in FIG.
  • the M group member devices in the group may include other UEs except the group head device A in the group A shown in FIG. 2 .
  • the first group of head devices can generate a synchronization signal, and the synchronization signal can be used for synchronization between the first group of head devices and the group head devices of other groups, or in other words, the synchronization signal can be used for inter-group synchronization, for example, the synchronization signal is called the synchronization signal.
  • the first synchronization signal In addition to generating the first synchronization signal, as the group head device of the first group, the first group head device may also generate a synchronization signal for the first group member device to synchronize with the first group head device, that is, the first group head device A group of head devices also generates a synchronization signal for synchronization within the group.
  • the head device of the first group may also generate a second synchronization signal, and the second synchronization signal may be used for synchronization within the first group, or may be used for synchronization between the M group member devices and the head device of the first group.
  • the timing at which the first group of head devices generates the first synchronization signal and the timing at which the second synchronization signal is generated may be the same or different.
  • the first group head device Since the first group head device will generate a synchronization signal for intra-group synchronization and also generate a synchronization signal for inter-group synchronization, in order to distinguish it from the synchronization signal for intra-group synchronization, the first group head device can Once the first indication information is added to the synchronization signal, the first indication information may indicate that the first synchronization signal is used for synchronization between group head devices of different groups, or the first indication information may indicate that the first synchronization signal is used for the group head device. synchronization between.
  • the first synchronization signal may be included in the MIB-SL, and the MIB-SL may be carried over a broadcast channel, such as PSBCH.
  • the MIB-SL includes reserved bits.
  • the first indication information may be carried by the reserved bits in the MIB-SL.
  • the first indication information may occupy one or more reserved bits.
  • new bits may also be added to the SSB, for example, one or more bits may be added to the PSBCH included in the SSB to carry the first indication information, which can make the indication more explicit.
  • both the synchronization signal used for inter-group synchronization (such as the first synchronization signal) and the synchronization signal used for intra-group synchronization (such as the second synchronization signal) carry first indication information, for example, the first indication information occupies 1 If the value of this 1 bit is "1", it indicates that the first synchronization signal is used for inter-group synchronization; if the value of this 1 bit is "0", it indicates that the first synchronization signal is used for intra-group synchronization, or Indicates that the first synchronization signal is not used for inter-group synchronization.
  • the synchronization signal used for inter-group synchronization may carry the first indication information
  • the intra-group signal such as the second synchronization signal
  • the first indication information is not carried.
  • an indication information occupies 1 bit. If the value of this bit is "1", it is considered that the synchronization signal carries the first indication information, and the synchronization signal is used for inter-group synchronization. If the value of this bit is "1" If it is "0", it is considered that the synchronization signal does not carry the first indication information, and the synchronization signal is used for intra-group synchronization.
  • the first indication information may also occupy more bits, and the indication manner may also be changed accordingly.
  • the first synchronization signal may be an aperiodic signal, so the first group of head devices may not need to periodically generate and send the first synchronization signal.
  • the first group of head devices can generate and send the first synchronization signal when triggered by an event, for example, the first group of head devices is in an idle state, that is, when the first group of head devices is in an idle state
  • the first synchronization signal can be generated and sent, so that the process of generating and sending the first synchronization signal can not affect other services of the first group of head devices; That is to say, when the first group head device is determined to be interfered by devices outside the group, it can generate and send a first synchronization signal.
  • the interference between groups can be reduced and communication reliability can be improved; for example, , the event is, for example, the event that the first group is constructed, that is, when the first group is constructed, the first group of head devices can generate and send the first synchronization signal, so that when a group is constructed, the A synchronization signal for inter-group synchronization can be sent, so that the inter-group synchronization is achieved as soon as possible, so as to reduce inter-group interference and realize inter-group communication as soon as possible.
  • the event may also be other events, and this embodiment of the present application does not limit the event that triggers the first synchronization signal.
  • the first group of head devices described here is in an idle state, which may mean that the first group of head devices does not send or receive information, but does not mean that the first group of head devices is in radio resource control (radio resource control). control, RRC) idle state.
  • radio resource control radio resource control
  • the first synchronization signal may also be a periodic signal, and the first group of head devices may periodically generate and transmit the first synchronization signal. If this method is adopted, the first synchronization signal does not need to be triggered by an event, which is relatively simple for the first group of head devices to implement.
  • the first synchronization signal may also include information of the first group.
  • the information of the first group includes, for example, the identifier of the first group, or the resource information occupied by the first group, or the identifier of the first group and the resource information occupied by the first group.
  • the resource information occupied by the first group includes, for example, information about time domain resources and/or frequency domain resources occupied by the first group. It is equivalent to indicating the resources occupied by the first group through the first synchronization signal, so that the group head device receiving the first synchronization signal can determine whether to avoid the resources occupied by the first group, so as to reduce the probability of resource collision, Improve communication performance.
  • the information of the first group can also be carried by the reserved bits in the MIB-SL, so that the format of the MIB-SL does not need to be changed, which helps to be compatible with the existing format. , which is convenient for the UE to identify, and can also improve the bit utilization rate.
  • a new bit can also be added to the MIB-SL, for example, one or more bits are added to the MIB-SL to carry the information of the first group, which can make it easier for the group head device that receives the first synchronization signal Identify the information for the first group.
  • the first group of head devices sends a first synchronization signal.
  • the first group of head devices can send the first synchronization signal after generating the first synchronization signal.
  • the first group of head devices can send the first synchronization signal by broadcasting.
  • the first group of head devices can send the first synchronization signal. It is not necessary to reduce the transmission power, then there may be multiple devices that can receive the first synchronization signal.
  • the devices receiving the first synchronization signal may also include group member devices. These group member devices may include the first synchronization signal. A group member device in a group, and possibly other group member devices in other groups. Alternatively, the head device of the first group can also send the first synchronization signal in a unicast manner.
  • the head device of the first group can send the first synchronization signal to the head device of the second group, and the head device of the second group can receive the first synchronization signal from the head device of the first group.
  • the first synchronization signal of the head device can be A first synchronization signal is received from the first set of head devices.
  • S32 in FIG. 3 takes the second group of head devices receiving the first synchronization signal as an example.
  • the second group head device is the group head device in the second group, and the second group head device can be used to manage the group member devices in the second group.
  • the second group includes N group member devices, and the second group head device can manage the N group member devices.
  • the management method includes, for example, allocating resources to the N group member devices. N is a natural number. If the technical solutions provided by the embodiments of the present application are applied to the scenario shown in FIG. 2 , the second group is, for example, group B in FIG. 2 , the second group head device is, for example, group head device B in FIG.
  • the N group member devices in the group may include other UEs except the group head device B in the group B shown in FIG. 2 .
  • a synchronization signal for inter-group synchronization can be sent, then for each group head device, when it is not in a dormant state and the resources of the group head device are not occupied, The group head device can listen to the synchronization signal for inter-group synchronization from other group head devices on this resource.
  • the resources of a group head device refer to the resources allocated to the group head device, and the resources of a group head device are occupied, for example, it means that the group head device sends or receives information through the resource.
  • the second group of head devices can identify the first synchronization signal. If the first indication information included in the first synchronization signal indicates that the first synchronization signal is used for inter-group synchronization, or if the first synchronization signal includes the first indication information, the second group head device determines that the first synchronization signal is used for inter-group synchronization .
  • the second group head device determines that the first synchronization signal is not used for inter-group synchronization synchronization, in which case the second group of head devices may discard the first synchronization signal.
  • the head device of the second group determines that the first synchronization signal is used for inter-group synchronization, the head device of the second group can perform different processing according to whether it has cooperated with other group head devices, which are described in different steps below. If the second group head device has not cooperated with any other group head device, S33 is performed, and if the second group head device has cooperated with one or more other group head devices, S34 is performed.
  • the synchronization signal used for inter-group synchronization (for example, the first synchronization signal) is sent by broadcasting, then some or all of the M group member devices may also receive the first synchronization signal, or The member devices of other groups (for example, the second group) may also receive the first synchronization signal; or, although the first synchronization signal is sent by unicast, the head device of the first group also sends the first synchronization signal to M If a group member device is used, then some or all of the M group member devices may also receive the first synchronization signal.
  • a group member device For a group member device, if a synchronization signal is received, it may be determined whether the synchronization signal includes first indication information, or whether the first indication information included in the synchronization signal indicates that the synchronization signal is used for inter-group synchronization. If the synchronization signal includes first indication information, or the first indication information included in the synchronization signal indicates that the synchronization signal is used for inter-group synchronization, the group member device may not respond to the synchronization signal, for example, may discard the synchronization signal. For example, a group member device receives the first synchronization signal.
  • the group member device may not respond to the first synchronization signal.
  • the team member device is, for example, one of the M team member devices, or one of the N team member devices, or a team member device in other groups except the first group and the second group.
  • the second group of head devices synchronizes with the first group of head devices according to the first synchronization signal.
  • the second group of head devices may synchronize with the first group of head devices if the second group of head devices is not cooperating with any other group head devices than the first group of head devices.
  • the first synchronization signal includes synchronization information
  • the synchronization information may indicate the time domain position understood by the first group of head devices, for example, indicating that a certain time domain position understood by the first group of head devices should be the 0th system frame. 1 slot. Then the second group of head devices can adjust the second group of head devices' understanding of the time domain position according to the synchronization information, so that the second group of head devices' understanding of the time domain position is consistent with the first group of head devices' understanding of the time domain position , for synchronization.
  • a group head device cooperates with other group head devices, for example, it is understood that a group head device is communicating with other group head devices, or a group head device has been synchronized with other group head devices, or a group head device has been understood.
  • the resources allocated for the group in which these group head devices are located are negotiated with other group head devices.
  • the first synchronization signal may also include the information of the first group, then if the first synchronization signal includes the information of the first group, in addition to synchronizing with the first group of head devices, the second group of head devices can also Determine the resource information occupied by the first group.
  • the head devices of the second group can avoid the resources occupied by the first group, that is , for the resources occupied by the first group, the head devices of the second group may not occupy the resources, and the head devices of the second group may also instruct the member devices in the second group not to occupy these resources, thereby reducing the probability of resource collision.
  • the second group of head devices may also determine resource information occupied by the first group. If the resources occupied by the first group conflict with the resources occupied by the second group, the second group head device may further determine whether the priority of the first group is higher than that of the second group.
  • the head devices of the second group can avoid the resources occupied by the first group, that is, for the resources occupied by the first group, the head devices of the second group may not occupy them, In addition, the head device of the second group can also instruct the group member devices in the first group not to occupy these resources, thereby reducing the probability of resource collision. However, if the priority of the first group is lower than the priority of the second group, the head device of the second group may not need to avoid the resources occupied by the first group, or instruct the member devices in the second group to avoid the resources occupied by the first group. resources, which can reduce the communication delay of high-priority devices. If the priority of the first group is equal to the priority of the second group, the head device of the second group may avoid the resources occupied by the first group, or may not avoid the resources occupied by the first group.
  • the head device of the second group may send a signal, and the head device of the second group may send the signal by broadcasting, for example, or may also send the signal by unicast.
  • This signal is sent to the first group of head devices.
  • the signal is, for example, a synchronization signal used for inter-group synchronization, such as a third synchronization signal.
  • the third synchronization signal carries second indication information, and the second indication information may indicate that the third synchronization signal is used for group head devices of different groups synchronization between.
  • the content and implementation manner indicated by the second indication information are similar to the first indication information, and reference may be made to the introduction to the first indication information.
  • the third synchronization signal may also carry information of the second group, where the information of the second group includes, for example, the identifier of the second group and/or the resource information occupied by the second group.
  • the processing method of the third synchronization signal by the group head device receiving the third synchronization signal is similar to the processing method of the first synchronization signal by the second group head device. For example, whether to cooperate with other group head devices can be determined according to whether The third synchronization signal performs synchronization, and in addition, it can be determined whether it is necessary to avoid the resources occupied by the second group, and the like.
  • the second group of head devices actually wants to inform the first group of head devices that the second group of head devices will not avoid the resources occupied by the first group, so the signal may not be a synchronization signal. broadcast to the first group of head devices.
  • the signal may include information of the second group.
  • the head device of the first group can avoid the resources occupied by the second group, thereby reducing the probability of resource collision.
  • the head device of the second group may not need to send the signal to reduce signaling overhead.
  • the second group of head devices is not synchronized with the first group of head devices.
  • the second group head device If the second group head device is already cooperating with one or more group head devices other than the first group head device, then cause the second group head device to cooperate with the second group head device if it is to synchronize with the first group head device
  • the first group head device also needs to be synchronized with the first group head device, and the process is more complicated and takes a long time. Therefore, if the second group head device has cooperated with other group head devices, after receiving the first synchronization signal for inter-group synchronization, the second group head device may not respond to the first synchronization signal and not cooperate with the first group head device. Device sync. For example, the second group of head devices may discard the first synchronization signal.
  • the second group head device may also send a synchronization signal, for example It is called the third synchronization signal.
  • the third synchronization signal is also a synchronization signal used for inter-group synchronization.
  • the third synchronization signal carries the second indication information, and the second indication information can indicate that the third synchronization signal is used for the group head devices of different groups. synchronization between.
  • the content and implementation manner indicated by the second indication information are similar to the first indication information, and reference may be made to the introduction to the first indication information.
  • the second group head device sends the third synchronization signal, which is used to synchronize other group head devices with the second group head device. Because the second group head device has cooperated with some group head devices, the second group head device does not respond to the first synchronization signal, and the second group head device can also send a third synchronization signal, so that the group receiving the third synchronization signal.
  • the head device can be synchronized with the second group of head devices, so that more group head devices can be synchronized.
  • the processing method of the third synchronization signal by the group head device receiving the third synchronization signal is similar to the processing method of the first synchronization signal by the second group head device.
  • the third synchronization signal may also include information of the second group, and the information of the second group includes, for example, the identifier of the second group, or the resource information occupied by the second group, or includes the identifier of the second group and the second group. Resource information occupied by the group, etc.
  • the processing method of the group head device receiving the third synchronization signal for the information of the second group is similar to the processing method of the second group head device for the information of the first group, and details are not repeated here.
  • the second group head device may not need to send the third synchronization signal, That is, the head device of the second group does not need to respond to the first synchronization signal, and does not need to send the third synchronization signal, which can reduce signaling overhead.
  • the first synchronization signal may also include the information of the first group, then if the first synchronization signal includes the information of the first group, although the head device of the second group is not synchronized with the head device of the first group, it can Determine the resource information occupied by the first group.
  • the head devices of the second group can avoid the resources occupied by the first group, that is , for the resources occupied by the first group, the head devices of the second group may not occupy the resources, and the head devices of the second group may also instruct the member devices in the second group not to occupy these resources, thereby reducing the probability of resource collision.
  • the first synchronization signal includes the information of the first group
  • the head devices of the second group are not synchronized with the head devices of the first group
  • the resource information occupied by the first group can be determined. If the resources occupied by the first group conflict with the resources occupied by the second group, the second group head device may further determine whether the priority of the first group is higher than that of the second group.
  • the head devices of the second group can avoid the resources occupied by the first group, that is, for the resources occupied by the first group, the head devices of the second group may not occupy them, In addition, the head device of the second group can also instruct the member devices in the second group not to occupy these resources, thereby reducing the probability of resource collision. However, if the priority of the first group is lower than the priority of the second group, the head device of the second group may not need to avoid the resources occupied by the first group, or instruct the member devices in the second group to avoid the resources occupied by the first group. resources, which can reduce the communication delay of high-priority devices. If the priority of the first group is equal to the priority of the second group, the head device of the second group may avoid the resources occupied by the first group, or may not avoid the resources occupied by the first group.
  • the head device of the second group may send the third synchronization signal, or may not send the third synchronization signal. If the head devices of the second group do not avoid the resources occupied by the first group, the head devices of the second group may also send the third synchronization signal, or may not send the third synchronization signal. If the second group head device sends the third synchronization signal, the group head device receiving the third synchronization signal can achieve synchronization with the second group head device, so that more group head devices can achieve synchronization.
  • the processing manner of the third synchronization signal by the group head device receiving the third synchronization signal is similar to the processing manner of the first synchronization signal by the second group head device.
  • the first group head device sends the second synchronization signal, and correspondingly, the group member device receives the second synchronization signal from the first group head device.
  • the team member device is, for example, one of M team member devices.
  • the first group of head devices may also generate a second synchronization signal, and the second synchronization signal can be used for synchronization in the first group, or in other words, the second synchronization signal can be used for M Synchronization of group member devices with the first group head device.
  • the head device of the first group may send the second synchronization signal, for example, the head device of the first group may send the second synchronization signal to the M group member devices in a unicast manner.
  • the first group head device may also transmit the second synchronization signal by means of intra-group broadcast.
  • S35 in FIG. 3 takes one of the group member devices receiving the second synchronization signal as an example.
  • the first group of head devices may transmit the first synchronization signal and the second synchronization signal at the same time, or the first group of head devices may transmit the first synchronization signal first and then the second synchronization signal, or the first group of head devices may transmit the first synchronization signal first.
  • the first synchronization signal is sent after the second synchronization signal.
  • the group member device synchronizes with the first group head device according to the second synchronization signal.
  • the group member device may determine whether the second synchronization signal includes corresponding indication information (eg, first indication information), or determine whether the first indication information included in the second synchronization signal indicates that the synchronization signal is used for inter-group synchronization. If the second synchronization signal does not include the first indication information, or the first indication information included in the second synchronization signal indicates that the second synchronization signal is used for intra-group synchronization, the group member device can communicate with the first group header according to the second synchronization signal. The device is synchronized.
  • the synchronization method please refer to the introduction above.
  • both intra-group synchronization and inter-group synchronization can be realized, so that each device in a group and inter-group devices can be better synchronized, reducing the probability of resource collision and improving communication performance.
  • the roles of the devices in the group can be changed.
  • the head device of the first group may be changed to a member device under certain conditions, or the head device of the first group may leave the first group (for example, due to movement, etc.), then the first group will be missing.
  • Group head equipment any member device in the first group can be changed to the head device of the first group by itself, or the M member devices in the first group can determine one of the group members through negotiation and other methods. The device is changed to the group head device, or one of the M group member devices can also be determined to be changed to the group head device by means of artificial designation.
  • any member device in the M group member devices may also be changed to the head device of the first group, for example
  • the member device can be changed to the head device of the first group by negotiating with the head device of the first group, and the head device of the first group can be changed to the member device, or it can also be manually designated to make M members
  • One of the group member devices in the device is changed to the group head device, and the first group head device is changed to the group member device.
  • the first group of head devices only needs to perform the task of the member device. For example, if the head device of the first group receives a synchronization signal for inter-group synchronization, the head device of the first group no longer responds to the synchronization signal, and if the head device of the first group receives a synchronization signal for intra-group synchronization of the first group synchronization signal, the head device of the first group can complete synchronization with the new group head device of the first group according to the synchronization signal.
  • the member device only needs to perform the task of the group head device.
  • the group member device can also send a synchronization signal for inter-group synchronization, and can also receive synchronization signals for inter-group synchronization from group head devices of other groups. If it receives a synchronization signal for inter-group synchronization, Then the processing method is similar to the processing method of the aforementioned second group of head devices.
  • the group member device may also send a synchronization signal for intra-group synchronization, so that the other group member devices in the first group are synchronized with the group member device. It can be seen that the roles of each device in the embodiment of the present application can be adjusted, and the user can change the roles of the devices in the group according to different requirements, so as to obtain a better experience.
  • the solutions provided by the embodiments of the present application may involve the participation of a network device, for example, a base station or the like.
  • a network device for example, a base station or the like.
  • the processes such as intra-group synchronization and inter-group synchronization between UEs can be performed without the participation of the base station to reduce the air interface signaling overhead; or, in the case of a base station, the group head device of each group It can be synchronized with the base station, so that the synchronization between each group can also be realized without excessive interaction between UEs, and the method is relatively simple.
  • the solutions provided by the embodiments of the present application can also enable UEs to complete intra-group synchronization and inter-group synchronization, reduce the intervention process of network equipment, and make communication between UEs more flexible, and Since intra-group synchronization and inter-group synchronization are realized, communication performance can be improved.
  • the first group head device in the first group may send a first synchronization signal
  • the first synchronization signal is used for synchronization between group head devices of different groups
  • the first synchronization signal passes through the first synchronization signal.
  • the indication information can indicate the purpose of the first synchronization signal. If the group head devices of other groups receive the first synchronization signal, they can synchronize with the first group head device according to the first synchronization signal. In this embodiment of the present application, it is not necessary to set the synchronization priority of the UE, so that the group head devices of each group can theoretically be synchronized.
  • the first synchronization signal is an aperiodic signal.
  • the first synchronization signal can be triggered by an event or by other means, which reduces the limitation of periodically sending the synchronization signal and increases the synchronization opportunity between the group head devices.
  • the synchronization signal used for inter-group synchronization may include information on the resources occupied by the group, then after a group head device competes for resources for the group in which the group head device is located, if it receives the information from other group head devices for the group If an inter-synchronized synchronization signal is used, the resources occupied by the group can be adjusted according to the resource information included in the synchronization signal.
  • a group head device competes for resources for the group in which the group head device is located, if it receives a synchronization signal for inter-group synchronization from other group head devices, it can be used for the synchronization signal according to the resource information included in the synchronization signal.
  • the group selects appropriate resources, for example, resources that are orthogonal to resources of other groups can be selected to reduce resource collision and improve communication performance.
  • FIG. 4 includes 3 groups, and the 3 groups are called group A, group B and group C respectively.
  • the group A includes multiple UEs
  • the group B includes multiple UEs
  • the group C includes multiple UEs.
  • a UE in group A is used as the group head device of group A, for example, the UE is called group head device A;
  • a UE in group B is used as the group head device of group B, and the UE is called group head device B, for example;
  • group C One of the UEs is used as the group head device of group C, for example, the UE is called group head device C.
  • the group head device C is closer to the group A, then the group head device C may think that the interference of the group A to the group B is greater when the group head device C performs sensing (sensing), and the group head device C competes for the resources of the group C.
  • the resources occupied by group A may be avoided.
  • the resources occupied by the two groups may not overlap.
  • FIG. 5 it is a schematic diagram showing that the resources occupied by the two groups do not overlap.
  • the group head device B is far away from the group A, and the group head device B may think that the interference between the group A and the group B is small when the group head device B is performing sensing (sensing), and the group head device B may not compete for the resources of the group B. Avoid the resources occupied by group A, which may cause conflicts between the resources occupied by group B and those occupied by group A. For example, the resources occupied by these two groups may partially or completely overlap. A schematic diagram of the partially overlapping resources occupied by two groups, where the dotted boxes represent overlapping resources. However, in fact, the UEs in the lower left corner of group B are relatively close to group A. If the resources used by these UEs overlap with those used by group A, serious interference may be caused, resulting in lower performance of edge UEs in group B. Difference.
  • the synchronization signal sent by the group head device A for inter-group synchronization can be received by the group head device B, then the group head device A and the group head device B can realize synchronization.
  • the synchronization signal may also include resource information occupied by group A, so that when group head device B competes for resources for group B, it can determine whether to avoid the resources occupied by group A, thereby reducing the probability of resource collision, Improved performance of edge UEs within a group.
  • FIG. 7 is a schematic structural diagram of a communication apparatus provided by an embodiment of the present application.
  • the communication apparatus 700 may be the first group of head devices described in the embodiment shown in FIG. 3 , and is configured to implement the method performed by the first group of head devices in the foregoing method embodiments.
  • the communication apparatus 700 may be the second group of head devices described in the embodiment shown in FIG. 3 , for implementing the method corresponding to the second group of head devices in the foregoing method embodiments.
  • the communication apparatus 700 may be the group member device described in the embodiment shown in FIG. 3 , and is configured to implement the method corresponding to the group member device in the foregoing method embodiments.
  • Communication device 700 includes one or more processors 701 .
  • the processor 701 may also be referred to as a processing unit, and may implement certain control functions.
  • the processor 701 may be a general-purpose processor or a special-purpose processor or the like. Examples include: baseband processors, central processing units, application processors, modem processors, graphics processors, image signal processors, digital signal processors, video codec processors, controllers, and/or neural networks processor etc.
  • the baseband processor may be used to process communication protocols and communication data.
  • the central processing unit may be used to control the communication device 700, execute software programs and/or process data.
  • the different processors can be stand-alone devices, or they can be integrated in one or more processors, for example, on one or more application specific integrated circuits.
  • the communication apparatus 700 includes one or more memories 702 for storing instructions 704, and the instructions can be executed on the processor, so that the communication apparatus 700 executes the methods described in the above method embodiments.
  • the memory 702 may also store data.
  • the processor and the memory can be provided separately or integrated together.
  • the communication apparatus 700 may include instructions 703 (sometimes also referred to as codes or programs), and the instructions 703 may be executed on the processor, so that the communication apparatus 700 executes the methods described in the above embodiments .
  • Data may be stored in the processor 701 .
  • the communication apparatus 700 may further include a transceiver 705 and an antenna 706 .
  • the transceiver 705 may be referred to as a transceiver unit, a transceiver, a transceiver circuit, a transceiver, an input and output interface, etc., and is used to implement the transceiver function of the communication device 700 through the antenna 706 .
  • the communication device 700 may further include one or more of the following components: a wireless communication module, an audio module, an external memory interface, an internal memory, a universal serial bus (universal serial bus, USB) interface, a power management module, an antenna, Speakers, microphones, I/O modules, sensor modules, motors, cameras, or displays, etc. It can be understood that, in some embodiments, the communication apparatus 700 may include more or less components, or some components may be integrated, or some components may be separated. These components may be implemented in hardware, software, or a combination of software and hardware.
  • the processor 701 and the transceiver 705 described in the embodiments of the present application may be implemented in an integrated circuit (IC), an analog IC, a radio frequency identification (RFID), a mixed-signal IC, and an application specific integrated circuit (application specific integrated circuit). integrated circuit, ASIC), printed circuit board (printed circuit board, PCB), or electronic equipment, etc.
  • IC integrated circuit
  • RFID radio frequency identification
  • ASIC application specific integrated circuit
  • PCB printed circuit board
  • electronic equipment etc.
  • the communication device described herein it can be an independent device (eg, an independent integrated circuit, a mobile phone, etc.), or it can be a part of a larger device (eg, a module that can be embedded in other devices).
  • the description of the first group of head devices, the second group of head devices, or the group member devices will not be repeated here.
  • FIG. 8 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.
  • the terminal device can realize the function of the first group of head devices described in the embodiment shown in FIG. 3 , or can realize the function of the second group of head devices described in the embodiment shown in FIG. The functionality of the group member device described in the embodiment shown.
  • the terminal device 800 is applicable to the architecture shown in FIG. 2 .
  • FIG. 8 only shows the main components of the terminal device 800 .
  • the terminal device 800 includes a processor, a memory, a control circuit, an antenna, and an input and output device.
  • the processor is mainly used to process communication protocols and communication data, control the entire terminal device 800, execute software programs, and process data of the software programs.
  • the memory is mainly used to store software programs and data.
  • the control circuit is mainly used for the conversion of the baseband signal and the radio frequency signal and the processing of the radio frequency signal.
  • Antennas are mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • Input and output devices such as touch screens, display screens, microphones, keyboards, etc., are mainly used to receive data input by users and output data to users.
  • the processor can read the software program in the storage unit, interpret and execute the instructions of the software program, and process the data of the software program.
  • the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the control circuit.
  • the control circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal through the antenna in the form of electromagnetic waves.
  • the control circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, which converts the baseband signal into data and processes the data .
  • FIG. 8 only shows one memory and a processor.
  • terminal device 800 may include multiple processors and memories.
  • the memory may also be referred to as a storage medium or a storage device, etc., which is not limited in this embodiment of the present invention.
  • the processor may include a baseband processor and a central processing unit.
  • the baseband processor is mainly used to process communication protocols and communication data
  • the central processing unit is mainly used to control the entire terminal device 800.
  • the software program is executed, and the data of the software program is processed.
  • the processor in FIG. 8 integrates the functions of the baseband processor and the central processing unit.
  • the baseband processor and the central processing unit may also be independent processors, interconnected by technologies such as a bus.
  • the terminal device 800 may include multiple baseband processors to adapt to different network standards, the terminal device 800 may include multiple central processors to enhance its processing capability, and various components of the terminal device 800 may be connected through various buses.
  • the baseband processor may also be expressed as a baseband processing circuit or a baseband processing chip.
  • the central processing unit can also be expressed as a central processing circuit or a central processing chip.
  • the function of processing the communication protocol and communication data may be built in the processor, or may be stored in the storage unit in the form of a software program, and the processor executes the software program to realize the baseband processing function.
  • the antenna and control circuit with a transceiving function can be regarded as the transceiving unit 810 of the terminal device 800
  • the processor having a processing function can be regarded as the processing unit 820 of the terminal device 800
  • the terminal device 800 includes a transceiver unit 810 and a processing unit 820 .
  • the transceiving unit may also be referred to as a transceiver, a transceiver, a transceiving device, or the like.
  • the device for implementing the receiving function in the transceiver unit 810 may be regarded as a receiving unit, and the device for implementing the transmitting function in the transceiver unit 810 may be regarded as a transmitting unit, that is, the transceiver unit 810 includes a receiving unit and a transmitting unit.
  • the receiving unit may also be referred to as a receiver, a receiver, a receiving circuit, and the like
  • the transmitting unit may be referred to as a transmitter, a transmitter, or a transmitting circuit, or the like.
  • the disclosed system, apparatus and method may be implemented in other manners.
  • the apparatus embodiments described above are only illustrative.
  • the division of the units is only a logical function division.
  • the units described as separate components may or may not be physically separated.
  • the components shown may or may not be physical units, ie may be located in one place, or may be distributed over multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
  • the functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium.
  • the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution, and the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned computer-readable storage medium can be any available medium that can be accessed by a computer.
  • the computer-readable medium may include random access memory (RAM), read-only memory (ROM), programmable read-only memory (PROM), Erasable programmable read only memory (erasable PROM, EPROM), electrically erasable programmable read only memory (electrically erasable programmable read only memory, EEPROM), compact disc read-only memory (compact disc read-only memory, CD- ROM), universal serial bus flash disk, removable hard disk, or other optical disk storage, magnetic disk storage medium, or other magnetic storage device, or capable of carrying or storing desired data in the form of instructions or data structures program code and any other medium that can be accessed by a computer.
  • RAM random access memory
  • ROM read-only memory
  • PROM programmable read-only memory
  • EPROM Erasable programmable read only memory
  • EEPROM electrically erasable programmable read only memory
  • compact disc read-only memory compact disc read-only memory
  • CD- ROM compact disc read-only memory
  • universal serial bus flash disk removable hard disk,
  • RAM static random access memory
  • DRAM dynamic random access memory
  • SDRAM synchronous dynamic random access memory
  • double data rate SDRAM double data rate SDRAM
  • DDR SDRAM double data rate SDRAM
  • ESDRAM enhanced synchronous dynamic random access memory
  • SLDRAM synchronous link dynamic random access memory
  • direct rambus RAM direct rambus RAM

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Abstract

本申请涉及一种通信方法、系统及装置。第一组头设备生成第一同步信号,第一同步信号包括第一指示信息、第一组的标识、以及第一组占用的资源信息,第一指示信息用于指示第一同步信号用于不同组的组头设备之间的同步,第一组头设备属于第一组,第一组还包括M个组员设备,第一组头设备管理M个组员设备。第一组头设备发送第一同步信号,第一同步信号为非周期性的信号。第二组头设备接收来自第一组头设备的第一同步信号,第二组头设备属于第二组,第二组还包括N个组员设备,第二组头设备管理N个组员设备,第一组和第二组具有不同的组标识。通过第一同步信号,能够实现组间同步。

Description

一种通信方法、系统及装置
相关申请的交叉引用
本申请要求在2020年12月02日提交中国国家知识产权局、申请号为202011398624.5、申请名称为“一种提升上行容量的方法”的中国专利申请的优先权,其全部内容通过引用结合在本申请中;本申请要求在2020年12月30日提交中国国家知识产权局、申请号为202011614779.8、申请名称为“一种通信方法、系统及装置”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域,尤其涉及一种通信方法、系统及装置。
背景技术
侧行链路(sidelink,SL)是蜂窝物联网技术的一个重要分支,称为物物通信技术(device to device communication,D2D)。该技术的存在为物联应用创造了广阔的应用前景,颠覆了以往传统的蜂窝网络通信架构甚至运营。例如车到一切(vehicle to everything,V2X),也是基于SL的架构所进行的场景的扩展和技术演进。
目前,SL一般占用的是授权(license)频谱,需要与长期演进(long term evolution,LTE)/新无线(new radio,NR)网络的频谱资源进行协调,导致SL使用的场景受限,速率也无法进一步提高。而非授权(Unlicense)频谱是开放的,可以通过有效的利用来提升性能和速率。Unlicense频谱的非授权性,使得所有系统都可以在上面进行传输、竞争资源。因此现在也考虑使得SL占用unlicense频谱,对此可称为侧行链路非授权(sidelink-unlicense,SL-U)。在SL-U中,以组(group)为单位运行的机制成为了主要研究的目标,即,多个用户设备(user equipment,UE)构成一个组,以组为单位来运行。以组为单位,可以很好地支持局部组队场景。
在将UE分组后,两个组之间如何实现同步,是目前尚未解决的问题。
发明内容
本申请实施例提供一种通信方法、系统及装置,用于提供存在分组之后的组间同步的方式。
第一方面,提供第一种通信方法。该方法包括:第一组头设备生成第一同步信号,所述第一同步信号包括第一指示信息、第一组的标识、以及所述第一组占用的资源信息,所述第一指示信息用于指示所述第一同步信号用于不同组的组头设备之间的同步,所述第一组头设备属于所述第一组,所述第一组还包括M个组员设备,所述第一组头设备用于管理所述M个组员设备,其中M为自然数;所述第一组头设备发送所述第一同步信号,所述第一同步信号为非周期性的信号;第二组头设备接收来自所述第一组头设备的所述第一同步信号,所述第二组头设备属于第二组,所述第二组还包括N个组员设备,所述第二组头设备用于管理所述N个组员设备,所述第一组和所述第二组具有不同的组标识,其中N为 自然数。
在本申请实施例中,第一组内的第一组头设备可发送第一同步信号,第一同步信号是用于不同组的组头设备之间的同步,且第一同步信号通过第一指示信息能够指示第一同步信号的用途,其他组的组头设备如果接收了第一同步信号,就能根据第一同步信号与第一组头设备实现同步。本申请实施例无需设置UE的同步优先级,使得各个组的组头设备在理论上都能实现同步。第一同步信号还可以包括第一组占用的资源信息,从而其他组的组头设备除了可以根据第一同步信号与第一组头设备实现同步外,还能对第一组占用的资源进行避让,这样可以减小组间的干扰,提高通信可靠性。而且第一同步信号是非周期性的信号,例如第一同步信号可通过事件触发,或通过其他方式触发等,减少了周期性发送同步信号的限制,增加了组头设备之间的同步机会。
结合第一方面,在第一方面的第一种可选的实施方式中,所述方法还包括:组员设备接收来自所述第一组头设备的所述第一同步信号,所述组员设备是所述M个组员设备中的一个,或所述组员设备是所述N个组员设备中的一个,或所述组员设备属于除所述第一组和所述第二组外的其他组;所述组员设备根据所述第一指示信息,不响应所述第一同步信号。组员设备也可能接收第一同步信号,对于一个组员设备来说,如果接收了第一同步信号,则可以不响应第一同步信号。可以认为,组员设备只需与该组员所在的组内的组头设备进行同步,而无需响应用于组间同步的同步信号,避免组员设备的同步过程出现混乱。另外,组员设备也无需响应来自其他组的设备的信号,对于组员设备来说实现更为简单。
结合第一方面或第一方面的第一种可选的实施方式,在第一方面的第二种可选的实施方式中,所述方法还包括:所述第一组头设备发送第二同步信号,所述第二同步信号用于所述M个组员设备与所述第一组头设备的同步;所述组员设备接收来自所述第一组头设备的所述第二同步信号;所述组员设备根据所述第二同步信号与所述第一组头设备进行同步。对于组头设备来说,既可以发送用于组间同步的同步信号,也可以发送用于组内同步的同步信号,扩展了组头设备的功能。而且通过本申请实施例提供的方式,既能实现组内同步,也能实现组间同步,使得组内的各个设备以及组间设备都能较好地实现同步,减小资源碰撞的概率,提高通信性能。
结合第一方面或第一方面的第一种可选的实施方式或第一方面的第二种可选的实施方式,在第一方面的第三种可选的实施方式中,所述方法还包括:在所述第二组头设备未与其他任意组头设备进行协作的情况下,所述第二组头设备根据所述第一同步信号,与所述第一组头设备进行同步。如果第二组头设备已与除了第一组头设备外的一个或多个组头设备协作,那么如果第二组头设备要与第一组头设备同步,就使得与第二组头设备协作的组头设备也需要与第一组头设备同步,流程较为复杂,且所需时间较长。但如果第二组头设备没有与除第一组头设备外的其他任何组头设备协作,这种情况下的同步无需牵涉到其他组头设备是否要与第一组头设备同步,那么第二组头设备可与第一组头设备进行同步,以实现第一组和第二组的同步。
结合第一方面或第一方面的第一种可选的实施方式至第一方面的第三种可选的实施方式中的任一种可选的实施方式,在第一方面的第四种可选的实施方式中,所述方法还包括:在所述第二组头设备未与其他任意组头设备进行协作的情况下,所述第二组头设备不占用所述第一组所占用的资源。如果第一组占用的资源与第二组占用的资源有冲突,例如第一组占用的资源与第二组占用的资源有重叠,那么第二组头设备除了与第一组头设备同 步外,还可以避让第一组占用的资源,即,对于第一组占用的资源,第二组头设备可以不占用,且第二组头设备也可以指示第二组内的组员设备不占用这些资源,从而减小了资源碰撞的概率。
结合第一方面或第一方面的第一种可选的实施方式或第一方面的第二种可选的实施方式,在第一方面的第五种可选的实施方式中,所述方法还包括:在所述第二组头设备已与其他一个或多个组头设备进行协作的情况下,所述第二组头设备不响应所述第一同步信号。如果第二组头设备已与除了第一组头设备外的一个或多个组头设备协作,那么如果第二组头设备要与第一组头设备同步,就使得与第二组头设备协作的组头设备也需要与第一组头设备同步,流程较为复杂,且所需时间较长。因此,如果第二组头设备已与其他组头设备协作,那么第二组头设备在接收用于组间同步的第一同步信号后,可以不响应第一同步信号,不与第一组头设备同步,以简化同步流程。例如第二组头设备可以丢弃第一同步信号。
结合第一方面的第五种可选的实施方式,在第一方面的第六种可选的实施方式中,所述方法还包括:所述第二组头设备发送第三同步信号,所述第三同步信号包括第二指示信息、所述第二组的标识,以及所述第二组占用的资源信息,所述第二指示信息用于指示所述第三同步信号用于不同组的组头设备之间的同步。因为第二组头设备已与一些组头设备协作,因此第二组头设备不响应第一同步信号,而另外第二组头设备还可以发送第三同步信号,使得接收第三同步信号的组头设备能够与第二组头设备实现同步,这样可以使得更多的组头设备达到同步。
结合第一方面或第一方面的第一种可选的实施方式至第一方面的第六种可选的实施方式中的任一种可选的实施方式,在第一方面的第七种可选的实施方式中,所述第一组头设备发送所述第一同步信号,包括:所述第一组头设备将所述第一同步信号发送给所述第二组头设备;或,所述第一组头设备将所述第一同步信号发送给所述第二组头设备和所述M个组员设备;或,所述第一组头设备将所述第一同步信号发送给多个组头设备;或,所述第一组头设备广播所述第一同步信号。第一组头设备可以通过单播方式发送第一同步信号,例如可将第一同步信号发送给第二组头设备,或者也可以将第一同步信号发送给多个组头设备,或者也可以将第一同步信号发送给第二组头设备和M个组员设备等,通过单播方式发送,可以使得第一同步信号的发送更有针对性。或者,第一组头设备也可以通过广播方式发送第一同步信号,以节省信令开销。
结合第一方面或第一方面的第一种可选的实施方式至第一方面的第七种可选的实施方式中的任一种可选的实施方式,在第一方面的第八种可选的实施方式中,所述第一组头设备发送所述第一同步信号,包括:在处于空闲状态的情况下,所述第一组头设备发送所述第一同步信号;或,在确定受到组外干扰的情况下,所述第一组头设备发送所述第一同步信号;或,在所述第一组构建完毕的情况下,所述第一组头设备发送所述第一同步信号。第一组头设备可以周期性发送第一同步信号,或者也可以在受到事件触发时发送第一同步信号。该事件例如为第一组头设备处于空闲状态的事件,或者为第一组头设备受到组外干扰的事件,或者为第一组构建完毕的事件等,本申请实施例对于能够触发第一组头设备发送第一同步信号的事件不做限制。通过事件触发第一同步信号的发送,则第一同步信号不再受制于周期,使得第一同步信号的发送更为灵活,增加了组间同步的机会。
结合第一方面或第一方面的第一种可选的实施方式至第一方面的第八种可选的实施 方式中的任一种可选的实施方式,在第一方面的第九种可选的实施方式中,所述方法还包括:所述组员设备变更为所述第一组的组头设备;所述组员设备发送第四同步信号,所述第四同步信号包括第三指示信息、所述第一组的标识、以及所述第一组占用的资源信息,所述第三指示信息用于指示所述第四同步信号用于不同组的组头设备之间的同步,所述第四同步信号为非周期性的信号。如果第一组内的一个组员设备变更为第一组的组头设备,则该组员设备执行组头设备的任务即可。例如该组员设备也可以发送用于组间同步的同步信号,以及也可以接收来自其他组的组头设备的用于组间同步的同步信号,如果接收了用于组间同步的同步信号,则处理方式与前述的第二组头设备的处理方式是类似的。另外该组员设备还可以发送用于组内同步的同步信号,使得第一组内的其他组员设备与该组员设备完成同步。可见,本申请实施例中各个设备的角色是可以调整的,用户可根据不同的需求变更组内设备的角色,以获得更好地体验。
结合第一方面或第一方面的第一种可选的实施方式至第一方面的第九种可选的实施方式中的任一种可选的实施方式,在第一方面的第十种可选的实施方式中,所述第一同步信号通过广播信道承载。
结合第一方面的第十种可选的实施方式,在第一方面的第十一种可选的实施方式中,所述广播信道承载MIB-SL,所述MIB-SL包括所述第一同步信号。如上给出了第一同步信号的一种发送方式,除此之外,第一同步信号也可以通过其他信道承载。
第二方面,提供第二种通信方法,该方法可由组头设备执行,或由芯片系统执行,该芯片系统能够实现组头设备的功能,该组头设备例如为第一组头设备。该方法包括:第一组头设备生成第一同步信号,所述第一同步信号包括第一指示信息、第一组的标识、以及所述第一组占用的资源信息,所述第一指示信息用于指示所述第一同步信号用于不同组的组头设备之间的同步,所述第一组头设备属于所述第一组,所述第一组还包括M个组员设备,所述第一组头设备用于管理所述M个组员设备,其中M为自然数;所述第一组头设备发送所述第一同步信号,所述第一同步信号为非周期性的信号。
结合第二方面,在第二方面的第一种可选的实施方式中,所述方法还包括:所述第一组头设备发送第二同步信号,所述第二同步信号用于所述M个组员设备与所述第一组头设备的同步。
结合第二方面或第二方面的第一种可选的实施方式,在第二方面的第二种可选的实施方式中,所述第一组头设备发送所述第一同步信号,包括:所述第一组头设备将所述第一同步信号发送给所述第二组头设备;或,所述第一组头设备将所述第一同步信号发送给所述第二组头设备和所述M个组员设备;或,所述第一组头设备广播所述第一同步信号。
结合第二方面或第二方面的第一种可选的实施方式或第二方面的第二种可选的实施方式,在第二方面的第三种可选的实施方式中,所述第一组头设备发送所述第一同步信号,包括:在处于空闲状态的情况下,所述第一组头设备发送所述第一同步信号;或,在确定受到组外干扰的情况下,所述第一组头设备发送所述第一同步信号;或,在所述第一组构建完毕的情况下,所述第一组头设备发送所述第一同步信号。
结合第二方面或第二方面的第一种可选的实施方式至第二方面的第三种可选的实施方式中的任一种可选的实施方式,在第二方面的第四种可选的实施方式中,所述第一同步信号通过广播信道承载。
结合第二方面的第四种可选的实施方式,在第二方面的第五种可选的实施方式中,所 述广播信道承载MIB-SL,所述MIB-SL包括所述第一同步信号。
关于第二方面或第二方面的各种可选的实施方式所带来的技术效果,可参考对于第一方面或相应的实施方式的技术效果的介绍。
第三方面,提供第三种通信方法,该方法可由组头设备执行,或由芯片系统执行,该芯片系统能够实现组头设备的功能,该组头设备例如为第二组头设备。该方法包括:第二组头设备接收来自第一组头设备的第一同步信号,所述第一同步信号包括第一指示信息、所述第一组的标识、以及所述第一组占用的资源信息,所述第一指示信息用于指示所述第一同步信号用于不同组的组头设备之间的同步,所述第一同步信号为非周期性的信号,所述第一组头设备属于第一组,所述第一组还包括M个组员设备,所述第一组头设备用于管理所述M个组员设备,所述第二组头设备属于第二组,所述第二组还包括N个组员设备,所述第二组头设备用于管理所述N个组员设备,所述第一组和所述第二组具有不同的组标识,其中M和N均为自然数。
结合第三方面,在第三方面的第一种可选的实施方式中,所述方法还包括:在所述第二组头设备未与其他任意组头设备进行协作的情况下,所述第二组头设备根据所述第一同步信号,与所述第一组头设备进行同步。
结合第三方面或第三方面的第一种可选的实施方式,在第三方面的第二种可选的实施方式中,所述方法还包括:在所述第二组头设备未与其他任意组头设备进行协作的情况下,所述第二组头设备不占用所述第一组所占用的资源。
结合第三方面,在第三方面的第三种可选的实施方式中,所述方法还包括:在所述第二组头设备已与其他一个或多个组头设备进行协作的情况下,所述第二组头设备不响应所述第一同步信号。
结合第三方面的第三种可选的实施方式,在第三方面的第四种可选的实施方式中,所述方法还包括:所述第二组头设备发送第三同步信号,所述第三同步信号包括第二指示信息、所述第二组的标识,以及所述第二组占用的资源信息,所述第二指示信息用于指示所述第三同步信号用于不同组的组头设备之间的同步。
结合第三方面或第三方面的第一种可选的实施方式至第三方面的第四种可选的实施方式,在第三方面的第五种可选的实施方式中,所述第一同步信号通过广播信道承载。
结合第三方面的第五种可选的实施方式,在第三方面的第六种可选的实施方式中,所述广播信道承载MIB-SL,所述MIB-SL包括所述第一同步信号。
关于第三方面或第三方面的各种可选的实施方式所带来的技术效果,可参考对于第一方面或相应的实施方式的技术效果的介绍。
第四方面,提供第四种通信方法,该方法可由组员设备执行,或由芯片系统执行,该芯片系统能够实现组员设备的功能。该方法包括:组员设备接收来自第一组头设备的第一同步信号,所述第一组头设备属于第一组,所述第一组包括M个组员设备,所述第一组头设备用于管理所述M个组员设备,所述组员设备是所述M个组员设备中的一个,或所述组员设备属于除所述第一组外的其他组,所述第一同步信号包括第一指示信息、所述第一组的标识、以及所述第一组占用的资源信息,所述第一指示信息用于指示所述第一同步信号用于不同组的组头设备之间的同步,所述第一同步信号为非周期性的信号,M和N均为自然数;所述组员设备根据所述第一指示信息,不响应所述第一同步信号。
结合第四方面,在第四方面的第一种可选的实施方式中,所述方法还包括:所述组员 设备接收来自所述第一组头设备的第二同步信号,所述第二同步信号用于所述M个组员设备与所述第一组头设备的同步;所述组员设备根据所述第二同步信号与所述第一组头设备进行同步。
结合第四方面或第四方面的第一种可选的实施方式,在第四方面的第二种可选的实施方式中,所述方法还包括:所述组员设备变更为所述第一组的组头设备;所述组员设备发送第四同步信号,所述第四同步信号包括第三指示信息、所述第一组的标识、以及所述第一组占用的资源信息,所述第三指示信息用于指示所述第四同步信号用于不同组的组头设备之间的同步,所述第四同步信号为非周期性的信号。
结合第四方面或第四方面的第一种可选的实施方式或第四方面的第二种可选的实施方式,在第四方面的第三种可选的实施方式中,所述第一同步信号通过广播信道承载。
结合第四方面的第三种可选的实施方式,在第四方面的第四种可选的实施方式中,所述广播信道承载MIB-SL,所述MIB-SL包括所述第一同步信号。
关于第四方面或第四方面的各种可选的实施方式所带来的技术效果,可参考对于第一方面或相应的实施方式的技术效果的介绍。
第五方面,提供一种通信装置。所述通信装置可以是上述第一至第四方面中的任意一方面所述的第一组头设备。所述通信装置具备上述第一组头设备的功能。一种可选的实现方式中,所述第一组头设备通过终端设备实现。一种可选的实现方式中,所述通信装置包括基带装置和射频装置。另一种可选的实现方式中,所述通信装置包括处理单元(有时也称为处理模块)和收发单元(有时也称为收发模块)。收发单元能够实现发送功能和接收功能,在收发单元实现发送功能时,可称为发送单元,在收发单元实现接收功能时,可称为接收单元。发送单元和接收单元可以是同一个功能模块,该功能模块称为收发单元,该功能模块能实现发送功能和接收功能;或者,发送单元和接收单元可以是不同的功能模块,收发单元是对这些功能模块的统称。
例如,所述处理单元,用于生成第一同步信号,所述第一同步信号包括第一指示信息、第一组的标识、以及所述第一组占用的资源信息,所述第一指示信息用于指示所述第一同步信号用于不同组的组头设备之间的同步,所述第一组头设备属于所述第一组,所述第一组还包括M个组员设备,所述第一组头设备用于管理所述M个组员设备,其中M为自然数;
所述收发单元,用于发送所述第一同步信号,所述第一同步信号为非周期性的信号(或者,所述发送单元,用于发送所述第一同步信号,所述第一同步信号为非周期性的信号;或者,所述处理单元,还用于通过所述收发单元发送所述第一同步信号,所述第一同步信号为非周期性的信号)。
再一种可选的实现方式中,所述通信装置包括存储单元和处理单元,所述处理单元用于与存储单元耦合,并执行存储单元中的程序或指令,使能所述通信装置执行上述第一组头设备的功能。
第六方面,提供另一种通信装置。所述通信装置可以是上述第一至第四方面中的任意一方面所述的第二组头设备。所述通信装置具备上述第二组头设备的功能。一种可选的实现方式中,所述第二组头设备通过终端设备实现。一种可选的实现方式中,所述通信装置包括基带装置和射频装置。另一种可选的实现方式中,所述通信装置包括处理单元(有时也称为处理模块)和收发单元(有时也称为收发模块)。关于收发单元的实现方式,可参 考对于第五方面的介绍。
例如,所述收发单元(或,所述发送单元),用于接收来自第一组头设备的第一同步信号,所述第一同步信号包括第一指示信息、所述第一组的标识、以及所述第一组占用的资源信息,所述第一指示信息用于指示所述第一同步信号用于不同组的组头设备之间的同步,所述第一同步信号为非周期性的信号,所述第一组头设备属于第一组,所述第一组还包括M个组员设备,所述第一组头设备用于管理所述M个组员设备,所述第二组头设备属于第二组,所述第二组还包括N个组员设备,所述第二组头设备用于管理所述N个组员设备,所述第一组和所述第二组具有不同的组标识,其中M和N均为自然数。
或者,所述处理单元,用于通过所述收发单元接收来自第一组头设备的第一同步信号,所述第一同步信号包括第一指示信息、所述第一组的标识、以及所述第一组占用的资源信息,所述第一指示信息用于指示所述第一同步信号用于不同组的组头设备之间的同步,所述第一同步信号为非周期性的信号,所述第一组头设备属于第一组,所述第一组还包括M个组员设备,所述第一组头设备用于管理所述M个组员设备,所述第二组头设备属于第二组,所述第二组还包括N个组员设备,所述第二组头设备用于管理所述N个组员设备,所述第一组和所述第二组具有不同的组标识,其中M和N均为自然数。
再一种可选的实现方式中,所述通信装置包括存储单元和处理单元,所述处理单元用于与存储单元耦合,并执行存储单元中的程序或指令,使能所述通信装置执行上述第二组头设备的功能。
第七方面,提供再一种通信装置。所述通信装置可以是上述第一至第四方面中的任意一方面所述的组员设备。所述通信装置具备上述组员设备的功能。一种可选的实现方式中,所述组员设备通过终端设备实现。一种可选的实现方式中,所述通信装置包括基带装置和射频装置。另一种可选的实现方式中,所述通信装置包括处理单元(有时也称为处理模块)和收发单元(有时也称为收发模块)。关于收发单元的实现方式,可参考对于第五方面的介绍。
例如,所述收发单元(或,所述接收单元),用于接收来自第一组头设备的第一同步信号,所述第一组头设备属于第一组,所述第一组包括M个组员设备,所述第一组头设备用于管理所述M个组员设备,所述组员设备是所述M个组员设备中的一个,或所述组员设备属于除所述第一组外的其他组,所述第一同步信号包括第一指示信息、所述第一组的标识、以及所述第一组占用的资源信息,所述第一指示信息用于指示所述第一同步信号用于不同组的组头设备之间的同步,所述第一同步信号为非周期性的信号,M和N均为自然数;
所述处理单元,用于根据所述第一指示信息,不响应所述第一同步信号。
或者:
所述处理单元,用于通过所述收发单元接收来自第一组头设备的第一同步信号,所述第一组头设备属于第一组,所述第一组包括M个组员设备,所述第一组头设备用于管理所述M个组员设备,所述组员设备是所述M个组员设备中的一个,或所述组员设备属于除所述第一组外的其他组,所述第一同步信号包括第一指示信息、所述第一组的标识、以及所述第一组占用的资源信息,所述第一指示信息用于指示所述第一同步信号用于不同组的组头设备之间的同步,所述第一同步信号为非周期性的信号,M和N均为自然数;
所述处理单元,还用于根据所述第一指示信息,不响应所述第一同步信号。
再一种可选的实现方式中,所述通信装置包括存储单元和处理单元,所述处理单元用于与存储单元耦合,并执行存储单元中的程序或指令,使能所述通信装置执行上述组员设备的功能。
第八方面,提供一种通信系统,该通信系统可包括第五方面所述的通信装置和第六方面所述的通信装置。
一种可选的实施方式中,该通信系统还可包括第七方面所述的通信装置。
一种可选的实施方式中,该通信系统还可包括第一方面至第四方面中的任意一方面所述的第一组。
一种可选的实施方式中,该通信系统还可包括第一方面至第四方面中的任意一方面所述的第二组。
第九方面,提供一种计算机可读存储介质,所述计算机可读存储介质用于存储计算机程序或指令,当其被运行时,使得上述各方面中组头设备或组员设备所执行的方法被实现。
第十方面,提供一种包含指令的计算机程序产品,当其在计算机上运行时,使得上述各方面所述的方法被实现。
附图说明
图1为侧行SSB的结构示意图;
图2为本申请实施例的一种应用场景示意图;
图3为本申请实施例提供的一种通信方法的流程图;
图4为本申请实施例中三个分组的一种示意图;
图5为本申请实施例中组A的资源和组C的资源不重叠的示意图;
图6为本申请实施例中组A的资源和组B的资源重叠的示意图;
图7为本申请实施例提供的通信装置的一种示意性框图;
图8为本申请实施例提供的终端设备的一种示意性框图。
具体实施方式
为了使本申请实施例的目的、技术方案和优点更加清楚,下面将结合附图对本申请实施例作进一步地详细描述。
本申请实施例中,终端设备是一种具有无线收发功能的设备,可以是固定设备,移动设备、手持设备(例如手机)、穿戴设备、车载设备,或内置于上述设备中的无线装置(例如,通信模块,调制解调器,或芯片系统等)。所述终端设备用于连接人,物,机器等,可广泛用于各种场景,例如包括但不限于以下场景:蜂窝通信、设备到设备通信(device-to-device,D2D)、车到一切(vehicle to everything,V2X)、机器到机器/机器类通信(machine-to-machine/machine-type communications,M2M/MTC)、物联网(internet of things,IoT)、虚拟现实(virtual reality,VR)、增强现实(augmented reality,AR)、工业控制(industrial control)、无人驾驶(self driving)、远程医疗(remote medical)、智能电网(smart grid)、智能家具、智能办公、智能穿戴、智能交通,智慧城市(smart city)、无人机、机器人等场景的终端设备。所述终端设备有时可称为UE、终端、接入站、UE站、远方站、无线通信设备、或用户装置等等。为描述方便,本申请实施例将终端设备以UE为 例进行说明。
本申请实施例中,对于名词的数目,除非特别说明,表示“单数名词或复数名词”,即"一个或多个”。“至少一个”是指一个或者多个,“多个”是指两个或两个以上。“和/或”,描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B的情况,其中A,B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。例如,A/B,表示:A或B。“以下至少一项(个)”或其类似表达,是指的这些项中的任意组合,包括单项(个)或复数项(个)的任意组合。例如,a,b,或c中的至少一项(个),表示:a,b,c,a和b,a和c,b和c,或a和b和c,其中a,b,c可以是单个,也可以是多个。
本申请实施例提及“第一”、“第二”等序数词是用于对多个对象进行区分,不用于限定多个对象的大小、内容、顺序、时序、优先级或者重要程度等。例如,第一同步信号和第二同步信号,可以是同一个同步信号,也可以是不同的同步信号,且,这种名称也并不是表示这两个同步信号的大小、内容、发送顺序、优先级或者重要程度等的不同。
SL是蜂窝物联网技术的一个重要分支,称为D2D。该技术的存在为物联应用创造了广阔的应用前景,颠覆了以往传统的蜂窝网络通信架构甚至运营。例如V2X,也是基于SL的架构所进行的场景的扩展和技术演进。
目前,SL一般占用的是license频谱,需要与LTE/NR网络的频谱资源进行协调,导致SL使用的场景受限,速率也无法进一步提高。而unlicense频谱是开放的,可以通过有效的利用来提升性能和速率。Unlicense频谱的非授权性,使得所有系统都可以在上面进行传输、竞争资源。因此现在也考虑使得SL占用unlicense频谱,对此可称为侧行链路非授权(sidelink-unlicense,SL-U)。在SL-U中,以组为单位运行的机制成为了主要研究的目标,即,多个UE构成一个组,以组为单位来运行。例如以组为单位的一些典型场景包括:
家庭场景:一个家庭中的多个UE可构成一个组。这些UE例如包括手机、电视机、个人计算机(personal computer,PC)、平板电脑(PAD)、音箱、智能手环、或耳机等设备中的一个或多个。
会议室场景:会议室中的多个UE可构成一个组。这些UE例如包括大屏设备、PC、手机、或平板电脑等设备中的一个或多个。
组队游戏场景:多人组队进行团队游戏,那么这多人所使用的多个设备(例如手机、PC或平板电脑等)可构成一个组。
以组为单位,不但可以很好地支持局部组队场景,还具有以下优点:
(1)减少资源碰撞概率。在高负载或用户数量较多等场景,如果不存在组的概念,各个UE都自主竞争资源,则对于unlicense频谱来说,产生资源碰撞的概率很高。如果存在组的概念,组内由一个设备作为组头(group header,GH)设备,其余设备作为组员(group member,GM)设备,由组头设备来为该组统筹资源分配,无需每个UE单独竞争资源,则可以极大地降低资源碰撞事件。
(2)提高资源分配效率。在组间协商好资源,群组内由组头设备统一分配资源,使得资源分配效率得到了提高。
(3)提升SL通信性能。例如,组头设备还可以获得组内的各个组员设备的信道信息、业务负载等信息,可以更好地进行链路控制,提高SL通信性能。
(4)降低时延。由于减少了与基站之间的信息交互,由此降低了空口时延。
引入组的概念后,需要讨论UE间同步的问题。现有的侧行同步机制可以使得两个失步的UE完成同步,例如可参考图1,为现有的侧行同步信号和物理广播信道块(synchronization signal and PBCH block,SSB)的结构。图1中的侧行主同步信号(sidelink primary synchronization signal,S-PSS)和侧行辅同步信号(sidelink secondary synchronization signal,S-SSS),都是同步序列,负责同步。物理侧行广播信道(physical sidelink broadcast channel,PSBCH)可承载主信息块(master information block,MIB)-SL,包含一些时域同步信息。另外图1中的GAP表示间隔。
但现有的侧行同步机制存在一些问题。例如,现在的侧行同步机制中存在同步优先级的概念,即,为不同的UE分别设置同步优先级,例如同步优先级与UE的同步源有关,UE的同步源不同,则同步优先级就可能不同。例如UE1的同步源为基站,UE2的同步源为卫星,则UE1的同步优先级可能高于UE2的同步优先级。一般来说,同步优先级较低的UE可以与同步优先级较高的UE进行同步。但如果两个UE的同步优先级相同,则这两个UE可能彼此都不与对方进行同步,导致这两个UE无法完成同步。因此,目前的侧行同步机制无法适用于提出组的概念后的UE之间的同步。
在提出组的概念后,UE之间的同步包括组内同步。对于组内同步,本申请实施例提出,对于一个组,可由该组的组头设备周期性发送同步信号和物理广播信道块(synchronization signal and PBCH block,SSB),该组的组员设备可监听来自组头设备的SSB,从而该组的各个组员设备都能与该组的组头设备实现同步。该组的组员设备无需监听组外的其他同步信息,从而保持一个组的独立性,也能实现节能。另外,组头设备在组内发送SSB时,也可以通过降低发送功率等方式来实现节能。
这只是组内同步的方式,如果组间同步也与组内同步采用同一个SSB,即,一个组的组头设备发送的SSB不仅可用于组内同步,也可用于组间同步,那么由于组头设备在发送SSB时会降低功率,可能导致其他组的设备无法接收到该SSB,使得组间无法实现同步。又或者,由于现有SSB的周期性配置,也很大可能导致组间无法实现同步。而如果组间同步采用前文介绍的现有的侧行同步机制,根据前文介绍可知,由于同步优先级的存在,如果两个组的设备的同步优先级相同,可能导致这两个组无法实现同步。
鉴于此,本申请实施例再提供了用于各个组的组头设备之间进行同步的方法,组头设备完成了同步,也就视为组间完成了同步。在本申请实施例中,第一组内的第一组头设备可发送第一同步信号,第一同步信号是用于不同组的组头设备之间的同步,且第一同步信号通过第一指示信息能够指示第一同步信号的用途,其他组的组头设备如果接收了第一同步信号,就能根据第一同步信号与第一组头设备实现同步。本申请实施例无需设置UE的同步优先级,使得各个组的组头设备在理论上都能实现同步。第一同步信号还可以包括第一组占用的资源信息,从而其他组的组头设备除了可以根据第一同步信号与第一组头设备实现同步外,还能对第一组占用的资源进行避让,这样可以减小组间的干扰,提高通信可靠性。而且第一同步信号是非周期性的信号,例如第一同步信号可通过事件触发,或通过其他方式触发等,减少了周期性发送同步信号的限制,增加了组头设备之间的同步机会。
本申请实施例提供的技术方案可以应用于第四代移动通信技术(the 4th generation,4G)系统中,例如LTE系统,或可以应用于5G系统中,例如NR系统,或者还可以应用于下一代移动通信系统或其他类似的通信系统,具体的不做限制。另外本申请实施例提供的技术方案可以应用于设备到设备(device-to-device,D2D)场景,例如NR-D2D场景等,或 者可以应用于V2X场景,例如NR-V2X场景等,例如可应用于车联网,例如V2X、车与车(vehicle-to-vehicle,V2V)等,或可用于智能驾驶、辅助驾驶、或智能网联车等领域。
请参考图2,为本申请实施例的一种应用场景的示意图。图2包括2个组,这2个组分别称为组A和组B。其中组A包括多个UE,组B包括多个UE。一个组所包括的UE的类型可能有多种,例如包括手机、平板电脑、PC、电视机、智能手环、智能眼镜、智能头盔、音箱、冰箱或洗衣机等设备中的一种或多种,图2中均以UE是手机为例。组A中的一个UE作为组A的组头设备,该UE例如称为组头设备A;组B中的一个UE作为组B的组头设备,该UE例如称为组头设备B。通过本申请实施例提供的方案,能够实现组头设备A和组头设备B之间的同步。图2只画出了两个组,实际上可能会存在更多组。另外图2中每个组里包括的UE的数量和相对位置等都只是示例。
下面结合附图介绍本申请实施例所提供的方法。
本申请实施例提供一种通信方法,请参见图3,为该方法的流程图。在下文的介绍过程中,以该方法应用于图2所示的网络架构为例。另外,本申请实施例中,各个组所使用的频域资源,例如为非授权频谱的资源,或者也可以是授权频谱的资源。
S31、第一组头设备生成第一同步信号,或者说,第一组头设备确定第一同步信号。
第一组头设备是第一组中的组头设备,第一组头设备可用于管理第一组中的组员设备,管理方式例如包括为第一组内的组员设备分配资源等。例如第一组包括M个组员设备,则第一组头设备可管理这M个组员设备,M为自然数。如果将本申请实施例提供的技术方案应用于图2所示的场景,则第一组例如为图2中的组A,第一组头设备例如为图2中的组头设备A,第一组中的M个组员设备可以包括图2所示的组A中除了组头设备A外的其他UE。
第一组头设备可生成同步信号,该同步信号可用于第一组头设备与其他组的组头设备间的同步,或者说,该同步信号可用于组间同步,例如将该同步信号称为第一同步信号。除了生成第一同步信号之外,作为第一组的组头设备,第一组头设备还可以生成用于第一组的组员设备与第一组头设备进行同步的同步信号,即,第一组头设备还会生成用于组内同步的同步信号。例如第一组头设备还可以生成第二同步信号,第二同步信号可用于第一组内的同步,或者说可用于M个组员设备与第一组头设备的同步。第一组头设备生成第一同步信号的时机和生成第二同步信号的时机可以相同,也可以不同。由于第一组头设备会生成用于组内同步的同步信号,也会生成用于组间同步的同步信号,因此为了区别于用于组内同步的同步信号,第一组头设备可在第一同步信号中添加第一指示信息,第一指示信息就可指示第一同步信号是用于不同组的组头设备间的同步,或者,第一指示信息可指示第一同步信号是用于组间同步。例如第一同步信号可包括在MIB-SL中,MIB-SL可通过广播信道承载,该广播信道例如为PSBCH。在MIB-SL中包括了预留(reserved)比特(bit),可选的,第一指示信息可通过MIB-SL中的预留比特承载,例如第一指示信息可占用一个或多个预留比特,这样可以不必改动MIB-SL的格式,有助于与现有的格式兼容,便于UE识别,且也能提高比特利用率。或者,也可以在SSB中新增比特,例如在SSB包括的PSBCH中新增一个或多个比特,用来承载第一指示信息,这样可以使得指示更为明确。
例如,无论是用于组间同步的同步信号(例如第一同步信号)还是用于组内同步的同步信号(例如第二同步信号),都携带第一指示信息,第一指示信息例如占用1个比特,如果这1个比特取值为“1”,表明第一同步信号用于组间同步,如果这1个比特取值为“0”, 表明第一同步信号用于组内同步,或者表明第一同步信号不用于组间同步。又例如,用于组间同步的同步信号(例如第一同步信号)可携带第一指示信息,而用于组内同步的组内信号(例如第二同步信号)不携带第一指示信息,第一指示信息例如占用1个比特,如果这1个比特取值为“1”,视为该同步信号携带了第一指示信息,则该同步信号用于组间同步,如果这1个比特取值为“0”,视为该同步信号未携带第一指示信息,则该同步信号用于组内同步。或者,第一指示信息也可以占用更多的比特,则指示方式也可以相应变化。
在本申请实施例中,第一同步信号可以是非周期性的信号,那么第一组头设备可以不必周期性地生成并发送第一同步信号。例如第一组头设备可以在受到事件触发的情况下生成并发送第一同步信号,该事件例如为第一组头设备处于空闲状态,也就是说,第一组头设备在处于空闲状态的情况下,可以生成并发送第一同步信号,这使得第一同步信号的生成和发送过程可以不影响第一组头设备的其他业务;又例如,该事件例如为确定受到组外干扰的事件,也就是说,第一组头设备在确定受到组外设备的干扰的情况下,可以生成并发送第一同步信号,通过组间的同步,可以减小组间的干扰,提高通信可靠性;再例如,该事件例如为第一组构建完毕的事件,也就是说,在第一组构建完毕的情况下,第一组头设备可以生成并发送第一同步信号,这样,在一个组构建完毕时就可以发送用于组间同步的同步信号,使得组间尽快实现同步,以减小组间干扰,且尽快实现组间的通信。或者,该事件还可以是其他事件,本申请实施例对于触发第一同步信号的事件不做限制。需要注意的是,这里所述的第一组头设备处于空闲状态,可以是指第一组头设备没有发送信息也没有接收信息,而并不是指第一组头设备处于无线资源控制(radio resource control,RRC)空闲态。
或者,第一同步信号也可以是周期性的信号,第一组头设备可以周期性生成并发送第一同步信号。如果采用这种方式,则第一同步信号无需通过事件触发,对于第一组头设备来说实现较为简单。
第一同步信号除了包括第一指示信息外,作为一种可选的实施方式,还可以包括第一组的信息。第一组的信息例如包括第一组的标识,或者包括第一组占用的资源信息,或者包括第一组的标识和第一组占用的资源信息。第一组占用的资源信息,例如包括第一组占用的时域资源的信息和/或频域资源的信息。相当于通过第一同步信号可以指示第一组所占用的资源,从而使得接收第一同步信号的组头设备能够确定是否要对第一组占用的资源进行避让,以减小资源碰撞的概率,提高通信性能。
第一同步信号如果包括第一组的信息,那么第一组的信息也可通过MIB-SL中的预留比特承载,这样可以不必改动MIB-SL的格式,有助于与现有的格式兼容,便于UE识别,且也能提高比特利用率。或者,也可以在MIB-SL中新增比特,例如在MIB-SL中新增一个或多个比特,用来承载第一组的信息,这样可以使得接收第一同步信号的组头设备更易于识别第一组的信息。
S32、第一组头设备发送第一同步信号。
第一组头设备在生成第一同步信号后就可以发送第一同步信号,例如第一组头设备可采用广播方式发送第一同步信号,例如第一组头设备在发送第一同步信号时可以不必降低发送功率,那么可能有多个设备都能接收第一同步信号,接收第一同步信号的设备除了包括其他组的组头设备外,还可能包括组员设备,这些组员设备可能包括第一组内的组员设备,还可能包括其他组内的组员设备。或者,第一组头设备也可以采用单播方式发送第一 同步信号,例如第一组头设备可将第一同步信号发送给第二组头设备,则第二组头设备接收来自第一组头设备的第一同步信号,又例如,第一组头设备可将第一同步信号发送给第二组头设备以及M个组员设备,则第二组头设备和M个组员设备都可以接收来自第一组头设备的第一同步信号。图3中的S32以第二组头设备接收第一同步信号为例。
第二组头设备是第二组中的组头设备,第二组头设备可用于管理第二组中的组员设备。例如第二组包括N个组员设备,则第二组头设备可管理这N个组员设备,管理方式例如包括为N个组员设备分配资源等,N为自然数。如果将本申请实施例提供的技术方案应用于图2所示的场景,则第二组例如为图2中的组B,第二组头设备例如为图2中的组头设备B,第二组中的N个组员设备可以包括图2所示的组B中除了组头设备B外的其他UE。
对于各个组头设备来说,都可以发送用于组间同步的同步信号,那么对于各个组头设备来说,在未处于休眠状态、且在该组头设备的资源未被占用的情况下,组头设备都能在该资源上监听来自其他组头设备的用于组间同步的同步信号。一个组头设备的资源,是指分配给该组头设备的资源,一个组头设备的资源被占用,例如是指该组头设备通过该资源发送信息或接收信息等。
例如第二组头设备接收了第一同步信号,则第二组头设备可识别第一同步信号。如果第一同步信号包括的第一指示信息指示第一同步信号用于组间同步,或者第一同步信号包括了第一指示信息,则第二组头设备确定第一同步信号用于组间同步。而如果第一同步信号包括的第一指示信息指示第一同步信号用于组内同步,或者第一同步信号不包括第一指示信息,则第二组头设备确定第一同步信号不用于组间同步,这种情况下,第二组头设备可丢弃第一同步信号。
第二组头设备如果确定第一同步信号是用于组间同步,那么第二组头设备根据是否已与其他组头设备进行协作,可进行不同的处理,下面通过不同的步骤分别介绍。如果第二组头设备未与其他任何组头设备进行协作,则执行S33,而如果第二组头设备已与其他一个或多个组头设备进行协作,则执行S34。
需要注意的是,如果用于组间同步的同步信号(例如第一同步信号)是通过广播方式发送,那么M个组员设备中的部分或全部组员设备也可能接收第一同步信号,或者其他组(例如第二组)的组员设备也可能接收第一同步信号;或者,虽然第一同步信号通过单播方式发送,但第一组头设备也将第一同步信号发送给了M个组员设备,那么M个组员设备中的部分或全部组员设备也可能接收第一同步信号。对于一个组员设备来说,如果接收了同步信号,可以确定该同步信号是否包括第一指示信息,或者确定该同步信号包括的第一指示信息是否指示该同步信号用于组间同步。如果该同步信号包括第一指示信息,或者该同步信号包括的第一指示信息指示该同步信号用于组间同步,那么该组员设备可以不对该同步信号进行响应,例如可丢弃该同步信号。例如一个组员设备接收了第一同步信号,由于第一同步信号包括第一指示信息,且第一指示信息指示第一同步信号用于组间同步,则该组员设备可不响应第一同步信号。该组员设备例如为M个组员设备中的一个,或者为N个组员设备中的一个,或者为除了第一组和第二组外的其他组内的组员设备。
S33、第二组头设备根据第一同步信号,与第一组头设备进行同步。
如果第二组头设备没有与除第一组头设备外的其他任何组头设备协作,那么第二组头设备可与第一组头设备进行同步。例如第一同步信号包括同步信息,该同步信息可指示第一组头设备所理解的时域位置,例如指示第一组头设备所理解的某个时域位置应该是第0 个系统帧的第1个时隙。那么第二组头设备根据该同步信息就能调整第二组头设备对于时域位置的理解,使得第二组头设备对于时域位置的理解与第一组头设备对于时域位置的理解一致,以实现同步。
一个组头设备与其他组头设备协作,例如理解为一个组头设备与其他组头设备在通信,或者理解为一个组头设备已于其他组头设备实现同步,或者理解为一个组头设备已与其他组头设备协商好了为这些组头设备所在的组所分配的资源等。
在前文介绍了,第一同步信号还可以包括第一组的信息,那么如果第一同步信号包括第一组的信息,则第二组头设备除了与第一组头设备进行同步外,还可以确定第一组占用的资源信息。如果第一组占用的资源与第二组占用的资源有冲突,例如第一组占用的资源与第二组占用的资源有重叠,那么第二组头设备可以避让第一组占用的资源,即,对于第一组占用的资源,第二组头设备可以不占用,且第二组头设备也可以指示第二组内的组员设备不占用这些资源,从而减小了资源碰撞的概率。
或者,如果第一同步信号包括第一组的信息,则第二组头设备除了与第一组头设备进行同步外,还可以确定第一组占用的资源信息。如果第一组占用的资源与第二组占用的资源有冲突,则第二组头设备可以进一步确定第一组的优先级是否高于第二组的优先级。如果第一组的优先级高于第二组的优先级,那么第二组头设备可以避让第一组占用的资源,即,对于第一组占用的资源,第二组头设备可以不占用,且第二组头设备也可以指示第一组内的组员设备不占用这些资源,从而减小了资源碰撞的概率。而如果第一组的优先级低于第二组的优先级,则第二组头设备可以不必避让第一组占用的资源,也可以无需指示第二组内的组员设备避让第一组占用的资源,这样可以减小高优先级设备的通信时延。如果第一组的优先级等于第二组的优先级,第二组头设备可以避让第一组占用的资源,也可以不避让第一组占用的资源。
如果第二组头设备不避让第一组占用的资源,那么可选的,第二组头设备可以发送信号,第二组头设备例如通过广播方式发送该信号,或者也可以通过单播方式将该信号发送给第一组头设备。该信号例如为用于组间同步的同步信号,例如称为第三同步信号,例如第三同步信号携带第二指示信息,第二指示信息可指示第三同步信号用于不同组的组头设备之间的同步。第二指示信息所指示的内容以及实现方式等都与第一指示信息类似,可参考对于第一指示信息的介绍。另外,第三同步信号还可以携带第二组的信息,第二组的信息例如包括第二组的标识和/或第二组占用的资源信息。接收第三同步信号的组头设备对于第三同步信号的处理方式与第二组头设备对于第一同步信号的处理方式是类似的,例如可以根据是否与其他组头设备进行协作,确定是否根据第三同步信号进行同步,另外还可以确定是否需要避让第二组占用的资源等。或者,此时第二组头设备实际上是想告知第一组头设备,第二组头设备不会避让第一组占用的资源,因此该信号也可以不是同步信号,例如该信号可通过单播方式发送给第一组头设备。该信号可包括第二组的信息,第一组头设备接收该信号后,可以避让第二组占用的资源,由此减小资源碰撞的概率。当然,即使第二组头设备不避让第一组占用的资源,第二组头设备也可以不必发送该信号,以减小信令开销。
S34、第二组头设备不与第一组头设备进行同步。
如果第二组头设备已与除了第一组头设备外的一个或多个组头设备协作,那么如果第二组头设备要与第一组头设备同步,就使得与第二组头设备协作的组头设备也需要与第一 组头设备同步,流程较为复杂,且所需时间较长。因此,如果第二组头设备已与其他组头设备协作,那么第二组头设备在接收用于组间同步的第一同步信号后,可以不响应第一同步信号,不与第一组头设备同步。例如第二组头设备可以丢弃第一同步信号。
可选的,如果第二组头设备已与其他的一个或多个组头设备协作,那么第二组头设备在接收用于组间同步的第一同步信号后,还可以发送同步信号,例如称为第三同步信号,第三同步信号也是用于组间同步的同步信号,例如第三同步信号携带第二指示信息,第二指示信息可指示第三同步信号用于不同组的组头设备之间的同步。第二指示信息所指示的内容以及实现方式等都与第一指示信息类似,可参考对于第一指示信息的介绍。第二组头设备发送第三同步信号,是用于让其他的组头设备与第二组头设备同步。因为第二组头设备已与一些组头设备协作,因此第二组头设备不响应第一同步信号,而另外第二组头设备还可以发送第三同步信号,使得接收第三同步信号的组头设备能够与第二组头设备实现同步,这样可以使得更多的组头设备达到同步。其中,接收第三同步信号的组头设备对于第三同步信号的处理方式,与第二组头设备对于第一同步信号的处理方式是类似的。可选的,第三同步信号还可以包括第二组的信息,第二组的信息例如包括第二组的标识,或包括第二组占用的资源信息,或包括第二组的标识和第二组占用的资源信息等。接收第三同步信号的组头设备对于第二组的信息的处理方式,与第二组头设备对于第一组的信息的处理方式是类似的,不多赘述。
或者,如果第二组头设备已与其他的一个或多个组头设备协作,那么第二组头设备在接收用于组间同步的第一同步信号后,也可以不必发送第三同步信号,即,第二组头设备不响应第一同步信号即可,无需发送第三同步信号,这样可以减少信令开销。
在前文介绍了,第一同步信号还可以包括第一组的信息,那么如果第一同步信号包括第一组的信息,则第二组头设备虽然不与第一组头设备进行同步,但可以确定第一组占用的资源信息。如果第一组占用的资源与第二组占用的资源有冲突,例如第一组占用的资源与第二组占用的资源有重叠,那么第二组头设备可以避让第一组占用的资源,即,对于第一组占用的资源,第二组头设备可以不占用,且第二组头设备也可以指示第二组内的组员设备不占用这些资源,从而减小了资源碰撞的概率。
或者,如果第一同步信号包括第一组的信息,则第二组头设备虽然不与第一组头设备进行同步,但可以确定第一组占用的资源信息。如果第一组占用的资源与第二组占用的资源有冲突,则第二组头设备可以进一步确定第一组的优先级是否高于第二组的优先级。如果第一组的优先级高于第二组的优先级,那么第二组头设备可以避让第一组占用的资源,即,对于第一组占用的资源,第二组头设备可以不占用,且第二组头设备也可以指示第二组内的组员设备不占用这些资源,从而减小了资源碰撞的概率。而如果第一组的优先级低于第二组的优先级,则第二组头设备可以不必避让第一组占用的资源,也可以无需指示第二组内的组员设备避让第一组占用的资源,这样可以减小高优先级设备的通信时延。如果第一组的优先级等于第二组的优先级,第二组头设备可以避让第一组占用的资源,也可以不避让第一组占用的资源。
如果第二组头设备会避让第一组占用的资源,则第二组头设备可以发送第三同步信号,也可以不发送第三同步信号。如果第二组头设备不避让第一组占用的资源,那么第二组头设备同样的可以发送第三同步信号,也可以不发送第三同步信号。如果第二组头设备发送了第三同步信号,则接收第三同步信号的组头设备能够与第二组头设备实现同步,这样可 以使得更多的组头设备达到同步。接收第三同步信号的组头设备对于第三同步信号的处理方式,与第二组头设备对于第一同步信号的处理方式是类似的。
S35、第一组头设备发送第二同步信号,相应的,组员设备接收来自第一组头设备的第二同步信号。该组员设备例如为M个组员设备中的一个。
在前文介绍了,第一组头设备除了生成第一同步信号外,还可能生成第二同步信号,第二同步信号可用于第一组内的同步,或者说,第二同步信号可用于M个组员设备与第一组头设备的同步。如果第一组头设备生成了第二同步信号,则第一组头设备可以发送第二同步信号,例如第一组头设备可通过单播方式将第二同步信号分别发送给M个组员设备中的部分或全部,或者第一组头设备也可以采用组内广播的方式发送第二同步信号。可能有多个组员设备都能接收第二同步信号,图3中的S35以其中一个组员设备接收第二同步信号为例。
第一组头设备可能同时发送第一同步信号和第二同步信号,或者,第一组头设备可能先发送第一同步信号后发送第二同步信号,或者,第一组头设备可能先发送第二同步信号后发送第一同步信号。
S36、组员设备根据第二同步信号与第一组头设备进行同步。
对于一个组员设备来说,如果接收了第二同步信号,可以确定第二同步信号的用途。例如,该组员设备可确定第二同步信号是否包括相应的指示信息(例如第一指示信息),或者确定第二同步信号包括的第一指示信息是否指示该同步信号用于组间同步。如果第二同步信号不包括第一指示信息,或者第二同步信号包括的第一指示信息指示第二同步信号用于组内同步,那么该组员设备可根据第二同步信号与第一组头设备进行同步,同步方式可参考前文的介绍。
通过本申请实施例提供的方式,既能实现组内同步,也能实现组间同步,使得组内的各个设备以及组间设备都能较好地实现同步,减小资源碰撞的概率,提高通信性能。
其中,S33~S36均为可选的步骤。
另外,对于一个组来说,该组内的设备的角色是可以改变的。例如对于第一组,第一组头设备在一定条件下可能会变更为组员设备,或者第一组头设备可能会离开第一组(例如由于移动等原因),那么第一组内会缺失组头设备。在这种情况下,第一组内的任一组员设备可自行变更为第一组的组头设备,或者第一组内的M个组员设备通过协商等方式,可确定其中一个组员设备变更为组头设备,或者也可以通过人为指定的方式确定M个组员设备中的一个组员设备变更为组头设备等。或者,即使第一组头设备并未离开第一组,也没有主动变更为组员设备,但M个组员设备中的任一组员设备也可能变更为第一组的组头设备,例如该组员设备通过与第一组头设备协商,可变更为第一组的组头设备,而第一组头设备变更为组员设备,或者也可通过人为指定的方式,使得M个组员设备中的一个组员设备变更为组头设备,以及使得第一组头设备变更为组员设备。
如果第一组头设备变更为组员设备,则第一组头设备执行组员设备的任务即可。例如第一组头设备如果接收了用于组间同步的同步信号,则第一组头设备不再响应该同步信号,而如果第一组头设备接收了用于第一组的组内同步的同步信号,则第一组头设备可根据该同步信号与第一组的新的组头设备完成同步。
如果第一组内的一个组员设备变更为第一组的组头设备,则该组员设备执行组头设备的任务即可。例如该组员设备也可以发送用于组间同步的同步信号,以及也可以接收来自 其他组的组头设备的用于组间同步的同步信号,如果接收了用于组间同步的同步信号,则处理方式与前述的第二组头设备的处理方式是类似的。另外该组员设备还可以发送用于组内同步的同步信号,使得第一组内的其他组员设备与该组员设备完成同步。可见,本申请实施例中各个设备的角色是可以调整的,用户可根据不同的需求变更组内设备的角色,以获得更好地体验。
另外,本申请实施例提供的方案,可以有网络设备的参与,该网络设备例如为基站等。在有基站的情况下,UE之间的组内同步和组间同步等过程都可以无需基站的参与,以减少空口信令开销;或者,在有基站的情况下,各个组的组头设备都可以与基站同步,这样也可以使得各个组之间实现同步,无需UE之间的过多交互,方式较为简单。如果没有网络设备的参与,通过本申请实施例提供的方案,也可以使得UE之间完成组内同步和组间同步,减少了网络设备的干预过程,使得UE之间的通信更为灵活,且由于实现了组内同步和组间同步,能够提高通信性能。
在本申请实施例中,第一组内的第一组头设备可发送第一同步信号,第一同步信号是用于不同组的组头设备之间的同步,且第一同步信号通过第一指示信息能够指示第一同步信号的用途,其他组的组头设备如果接收了第一同步信号,就能根据第一同步信号与第一组头设备实现同步。本申请实施例无需设置UE的同步优先级,使得各个组的组头设备在理论上都能实现同步。而且第一同步信号是非周期性的信号,例如第一同步信号可通过事件触发,或通过其他方式触发等,减少了周期性发送同步信号的限制,增加了组头设备之间的同步机会。
而且,用于组间同步的同步信号可包括群组所占用的资源信息,那么在一个组头设备为该组头设备所在的组竞争资源后,如果接收了来自其他组头设备的用于组间同步的同步信号,则可根据该同步信号所包括的资源信息调整该组占用的资源。或者,在一个组头设备为该组头设备所在的组竞争资源前,如果接收了来自其他组头设备的用于组间同步的同步信号,则可根据该同步信号所包括的资源信息为该组选择合适的资源,例如可选择与其他组的资源相互正交的资源,以减少资源碰撞,提高通信性能。
例如可参考图4,图4包括3个组,这3个组分别称为组A、组B和组C。其中组A包括多个UE,组B包括多个UE,组C包括多个UE。组A中的一个UE作为组A的组头设备,该UE例如称为组头设备A;组B中的一个UE作为组B的组头设备,该UE例如称为组头设备B;组C中的一个UE作为组C的组头设备,该UE例如称为组头设备C。可以看到,组头设备C距离组A较近,则组头设备C在进行探测(sensing)时,可能认为组A对于组B的干扰较大,则组头设备C为组C竞争资源时可能会避让组A所占用的资源,例如这两个组所占用的资源可能没有重叠,可参考图5,为这两个组占用的资源没有重叠的示意图。而组头设备B距离组A较远,则组头设备B在进行探测(sensing)时,可能认为组A对于组B的干扰较小,则组头设备B为组B竞争资源时可能不会避让组A所占用的资源,这就可能导致组B占用的资源与组A占用的资源有冲突,例如这两个组所占用的资源可能部分重叠或完全重叠,可参考图6,为这两个组占用的资源部分重叠的示意图,其中虚线框表示重叠资源。但实际上组B中的左下角的UE距离组A是比较近的,如果这些UE使用的资源与组A使用的资源重叠,可能导致较为严重的干扰,导致组B内的边缘UE的性能较差。
但如果采用本申请实施例提供的技术方案,例如组头设备A发送的用于组间同步的同 步信号能够被组头设备B接收,则组头设备A与组头设备B能够实现同步。且该同步信号还可以包括组A占用的资源信息,从而组头设备B在为组B竞争资源时,能够确定是否要对组A占用的资源进行避让,由此减小了资源碰撞的概率,提高了群组内边缘UE的性能。
图7给出了本申请实施例提供的一种通信装置的结构示意图。所述通信装置700可以是图3所示的实施例所述的第一组头设备,用于实现上述方法实施例中第一组头设备所执行的方法。或者,所述通信装置700可以是图3所示的实施例所述的第二组头设备,用于实现上述方法实施例中对应于第二组头设备的方法。或者,所述通信装置700可以是图3所示的实施例所述的组员设备,用于实现上述方法实施例中对应于组员设备的方法。具体的功能可以参见上述方法实施例中的说明。
通信装置700包括一个或多个处理器701。处理器701也可以称为处理单元,可以实现一定的控制功能。所述处理器701可以是通用处理器或者专用处理器等。例如,包括:基带处理器,中央处理器,应用处理器,调制解调处理器,图形处理器,图像信号处理器,数字信号处理器,视频编解码处理器,控制器,和/或神经网络处理器等。所述基带处理器可以用于对通信协议以及通信数据进行处理。所述中央处理器可以用于对通信装置700进行控制,执行软件程序和/或处理数据。不同的处理器可以是独立的器件,也可以是集成在一个或多个处理器中,例如,集成在一个或多个专用集成电路上。
可选的,通信装置700中包括一个或多个存储器702,用于存储指令704,所述指令可在所述处理器上被运行,使得通信装置700执行上述方法实施例中描述的方法。可选的,所述存储器702中还可以存储有数据。所述处理器和存储器可以单独设置,也可以集成在一起。
可选的,通信装置700可以包括指令703(有时也可以称为代码或程序),所述指令703可以在所述处理器上被运行,使得所述通信装置700执行上述实施例中描述的方法。处理器701中可以存储数据。
可选的,通信装置700还可以包括收发器705以及天线706。所述收发器705可以称为收发单元、收发机、收发电路、收发器,输入输出接口等,用于通过天线706实现通信装置700的收发功能。
可选的,通信装置700还可以包括以下一个或多个部件:无线通信模块,音频模块,外部存储器接口,内部存储器,通用串行总线(universal serial bus,USB)接口,电源管理模块,天线,扬声器,麦克风,输入输出模块,传感器模块,马达,摄像头,或显示屏等等。可以理解,在一些实施例中,通信装置700可以包括更多或更少部件,或者某些部件集成,或者某些部件拆分。这些部件可以是硬件,软件,或者软件和硬件的组合实现。
本申请实施例中描述的处理器701和收发器705可实现在集成电路(integrated circuit,IC)、模拟IC、射频集成电路(radio frequency identification,RFID)、混合信号IC、专用集成电路(application specific integrated circuit,ASIC)、印刷电路板(printed circuit board,PCB)、或电子设备等上。实现本文描述的通信装置,可以是独立设备(例如,独立的集成电路,手机等),或者可以是较大设备中的一部分(例如,可嵌入在其他设备内的模块),具体可以参照前述关于第一组头设备,第二组头设备,或组员设备的说明,在此不再赘述。
图8给出了本申请实施例提供的一种终端设备的结构示意图。该终端设备例如能够实 现图3所示的实施例所述的第一组头设备的功能,或者能够实现图3所示的实施例所述的第二组头设备的功能,或者能够实现图3所示的实施例所述的组员设备的功能。
该终端设备800可适用于图2所示的架构中。为了便于说明,图8仅示出了终端设备800的主要部件。如图8所示,终端设备800包括处理器、存储器、控制电路、天线以及输入输出装置。处理器主要用于对通信协议以及通信数据进行处理,以及对整个终端设备800进行控制,执行软件程序,处理软件程序的数据。存储器主要用于存储软件程序和数据。控制电路主要用于基带信号与射频信号的转换以及对射频信号的处理。天线主要用于收发电磁波形式的射频信号。输入输出装置,例如触摸屏,显示屏,麦克风,键盘等主要用于接收用户输入的数据以及对用户输出数据。
以终端设备800是手机为例,当终端设备800开机后,处理器可以读取存储单元中的软件程序,解释并执行软件程序的指令,处理软件程序的数据。当需要通过无线发送数据时,处理器对待发送的数据进行基带处理后,输出基带信号至控制电路,控制电路将基带信号进行射频处理后将射频信号通过天线以电磁波的形式向外发送。当有数据发送到终端设备800时,控制电路通过天线接收到射频信号,将射频信号转换为基带信号,并将基带信号输出至处理器,处理器将基带信号转换为数据并对该数据进行处理。
本领域技术人员可以理解,为了便于说明,图8仅示出了一个存储器和处理器。在一些实施例中,终端设备800可以包括多个处理器和存储器。存储器也可以称为存储介质或者存储设备等,本发明实施例对此不做限制。
作为一种可选的实现方式,处理器可以包括基带处理器和中央处理器,基带处理器主要用于对通信协议以及通信数据进行处理,中央处理器主要用于对整个终端设备800进行控制,执行软件程序,处理软件程序的数据。图8中的处理器集成了基带处理器和中央处理器的功能,本领域技术人员可以理解,基带处理器和中央处理器也可以是各自独立的处理器,通过总线等技术互联。终端设备800可以包括多个基带处理器以适应不同的网络制式,终端设备800可以包括多个中央处理器以增强其处理能力,终端设备800的各个部件可以通过各种总线连接。所述基带处理器也可以表述为基带处理电路或者基带处理芯片。所述中央处理器也可以表述为中央处理电路或者中央处理芯片。对通信协议以及通信数据进行处理的功能可以内置在处理器中,也可以以软件程序的形式存储在存储单元中,由处理器执行软件程序以实现基带处理功能。
在一个例子中,可以将具有收发功能的天线和控制电路视为终端设备800的收发单元810,将具有处理功能的处理器视为终端设备800的处理单元820。如图8所示,终端设备800包括收发单元810和处理单元820。收发单元也可以称为收发器、收发机、收发装置等。可选的,可以将收发单元810中用于实现接收功能的器件视为接收单元,将收发单元810中用于实现发送功能的器件视为发送单元,即收发单元810包括接收单元和发送单元。示例性的,接收单元也可以称为接收机、接收器、接收电路等,发送单元可以称为发射机、发射器或者发射电路等。
本领域普通技术人员可以意识到,结合本文中所公开的实施例描述的各示例的单元及步骤,能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行,取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本申请的范围。
在本申请所提供的几个实施例中,应该理解到,所揭露的系统、装置和方法,可以通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如,所述单元的划分,仅仅为一种逻辑功能划分,作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。基于这样的理解,本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的计算机可读存储介质,可以是计算机能够存取的任何可用介质。以此为例但不限于:计算机可读介质可以包括随机存取存储器(random access memory,RAM)、只读存储器(read-only memory,ROM)、可编程只读存储器(programmable ROM,PROM)、可擦除可编程只读存储器(erasable PROM,EPROM)、电可擦可编程只读存储器(electrically erasable programmable read only memory,EEPROM)、紧凑型光盘只读存储器(compact disc read-only memory,CD-ROM)、通用串行总线闪存盘(universal serial bus flash disk)、移动硬盘、或其他光盘存储、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质。另外,通过示例性但不是限制性说明,许多形式的RAM可用,例如静态随机存取存储器(static RAM,SRAM)、动态随机存取存储器(dynamic RAM,DRAM)、同步动态随机存取存储器(synchronous DRAM,SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM,DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM,ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM,SLDRAM)或直接内存总线随机存取存储器(direct rambus RAM,DR RAM)。
以上所述,仅为本申请的具体实施方式,但本申请实施例的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本申请实施例揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本申请实施例的保护范围之内。因此,本申请实施例的保护范围应所述以权利要求的保护范围为准。

Claims (29)

  1. 一种通信方法,其特征在于,包括:
    第一组头设备生成第一同步信号,所述第一同步信号包括第一指示信息、第一组的标识、以及所述第一组占用的资源信息,所述第一指示信息用于指示所述第一同步信号用于不同组的组头设备之间的同步,所述第一组头设备属于所述第一组,所述第一组还包括M个组员设备,所述第一组头设备用于管理所述M个组员设备,其中M为自然数;
    所述第一组头设备发送所述第一同步信号,所述第一同步信号为非周期性的信号;
    第二组头设备接收来自所述第一组头设备的所述第一同步信号,所述第二组头设备属于第二组,所述第二组还包括N个组员设备,所述第二组头设备用于管理所述N个组员设备,所述第一组和所述第二组具有不同的组标识,其中N为自然数。
  2. 根据权利要求1所述的方法,其特征在于,所述方法还包括:
    组员设备接收来自所述第一组头设备的所述第一同步信号,所述组员设备是所述M个组员设备中的一个,或是所述N个组员设备中的一个,或所述组员设备属于除所述第一组和所述第二组外的其他组;
    所述组员设备根据所述第一指示信息,不响应所述第一同步信号。
  3. 根据权利要求1或2所述的方法,其特征在于,所述方法还包括:
    所述第一组头设备发送第二同步信号,所述第二同步信号用于所述M个组员设备与所述第一组头设备的同步;
    所述组员设备接收来自所述第一组头设备的所述第二同步信号;
    所述组员设备根据所述第二同步信号与所述第一组头设备进行同步。
  4. 根据权利要求1~3任一项所述的方法,其特征在于,所述方法还包括:
    在所述第二组头设备未与其他任意组头设备进行协作的情况下,所述第二组头设备根据所述第一同步信号,与所述第一组头设备进行同步。
  5. 根据权利要求1~4任一项所述的方法,其特征在于,所述方法还包括:
    在所述第二组头设备未与其他任意组头设备进行协作的情况下,所述第二组头设备不占用所述第一组所占用的资源。
  6. 根据权利要求1~3任一项所述的方法,其特征在于,所述方法还包括:
    在所述第二组头设备已与其他一个或多个组头设备进行协作的情况下,所述第二组头设备不响应所述第一同步信号。
  7. 根据权利要求6所述的方法,其特征在于,所述方法还包括:
    所述第二组头设备发送第三同步信号,所述第三同步信号包括第二指示信息、所述第二组的标识,以及所述第二组占用的资源信息,所述第二指示信息用于指示所述第三同步信号用于不同组的组头设备之间的同步。
  8. 根据权利要求1~7任一项所述的方法,其特征在于,所述第一组头设备发送所述第一同步信号,包括:
    所述第一组头设备将所述第一同步信号发送给所述第二组头设备;或,
    所述第一组头设备将所述第一同步信号发送给所述第二组头设备和所述M个组员设备;或,
    所述第一组头设备广播所述第一同步信号。
  9. 根据权利要求1~8任一项所述的方法,其特征在于,所述第一组头设备发送所述第一同步信号,包括:
    在处于空闲状态的情况下,所述第一组头设备发送所述第一同步信号;或,
    在确定受到组外干扰的情况下,所述第一组头设备发送所述第一同步信号;或,
    在所述第一组构建完毕的情况下,所述第一组头设备发送所述第一同步信号。
  10. 根据权利要求1~9任一项所述的方法,其特征在于,所述方法还包括:
    所述组员设备变更为所述第一组的组头设备;
    所述组员设备发送第四同步信号,所述第四同步信号包括第三指示信息、所述第一组的标识、以及所述第一组占用的资源信息,所述第三指示信息用于指示所述第四同步信号用于不同组的组头设备之间的同步,所述第四同步信号为非周期性的信号。
  11. 根据权利要求1~10任一项所述的方法,其特征在于,所述第一同步信号通过广播信道承载。
  12. 根据权利要求11所述的方法,其特征在于,所述广播信道承载MIB-SL,所述MIB-SL包括所述第一同步信号。
  13. 一种通信方法,其特征在于,包括:
    第一组头设备生成第一同步信号,所述第一同步信号包括第一指示信息、第一组的标识、以及所述第一组占用的资源信息,所述第一指示信息用于指示所述第一同步信号用于不同组的组头设备之间的同步,所述第一组头设备属于所述第一组,所述第一组还包括M个组员设备,所述第一组头设备用于管理所述M个组员设备,其中M为自然数;
    所述第一组头设备发送所述第一同步信号,所述第一同步信号为非周期性的信号。
  14. 根据权利要求13所述的方法,其特征在于,所述方法还包括:
    所述第一组头设备发送第二同步信号,所述第二同步信号用于所述M个组员设备与所述第一组头设备的同步。
  15. 根据权利要求13或14所述的方法,其特征在于,所述第一组头设备发送所述第一同步信号,包括:
    所述第一组头设备将所述第一同步信号发送给所述第二组头设备;或,
    所述第一组头设备将所述第一同步信号发送给所述第二组头设备和所述M个组员设备;或,
    所述第一组头设备广播所述第一同步信号。
  16. 根据权利要求13~15任一项所述的方法,其特征在于,所述第一组头设备发送所述第一同步信号,包括:
    在处于空闲状态的情况下,所述第一组头设备发送所述第一同步信号;或,
    在确定受到组外干扰的情况下,所述第一组头设备发送所述第一同步信号;或,
    在所述第一组构建完毕的情况下,所述第一组头设备发送所述第一同步信号。
  17. 根据权利要求13~16任一项所述的方法,其特征在于,所述第一同步信号通过广播信道承载。
  18. 根据权利要求17所述的方法,其特征在于,所述广播信道承载MIB-SL,所述MIB-SL包括所述第一同步信号。
  19. 一种通信方法,其特征在于,包括:
    第二组头设备接收来自第一组头设备的第一同步信号,所述第一同步信号包括第一指 示信息、所述第一组的标识、以及所述第一组占用的资源信息,所述第一指示信息用于指示所述第一同步信号用于不同组的组头设备之间的同步,所述第一同步信号为非周期性的信号,所述第一组头设备属于第一组,所述第一组还包括M个组员设备,所述第一组头设备用于管理所述M个组员设备,所述第二组头设备属于第二组,所述第二组还包括N个组员设备,所述第二组头设备用于管理所述N个组员设备,所述第一组和所述第二组具有不同的组标识,其中M和N均为自然数。
  20. 根据权利要求19所述的方法,其特征在于,所述方法还包括:
    在所述第二组头设备未与其他任意组头设备进行协作的情况下,所述第二组头设备根据所述第一同步信号,与所述第一组头设备进行同步。
  21. 根据权利要求19或20所述的方法,其特征在于,所述方法还包括:
    在所述第二组头设备未与其他任意组头设备进行协作的情况下,所述第二组头设备不占用所述第一组所占用的资源。
  22. 根据权利要求19所述的方法,其特征在于,所述方法还包括:
    在所述第二组头设备已与其他一个或多个组头设备进行协作的情况下,所述第二组头设备不响应所述第一同步信号。
  23. 根据权利要求22所述的方法,其特征在于,所述方法还包括:
    所述第二组头设备发送第三同步信号,所述第三同步信号包括第二指示信息、所述第二组的标识,以及所述第二组占用的资源信息,所述第二指示信息用于指示所述第三同步信号用于不同组的组头设备之间的同步。
  24. 根据权利要求19~23任一项所述的方法,其特征在于,所述第一同步信号通过广播信道承载。
  25. 根据权利要求24所述的方法,其特征在于,所述广播信道承载MIB-SL,所述MIB-SL包括所述第一同步信号。
  26. 一种通信系统,其特征在于,包括第一组和第二组,所述第一组包括第一组头设备和M个组员设备,所述第一组头设备用于管理所述M个组员设备,M为自然数,所述第二组包括第二组头设备和N个组员设备,所述第二组头设备用于管理所述N个组员设备,N为自然数;其中,
    所述第一组头设备,用于生成第一同步信号,并发送所述第一同步信号,所述第一同步信号为非周期的信号,所述第一同步信号包括第一指示信息、第一组的标识、以及所述第一组占用的资源信息,所述第一指示信息用于指示所述第一同步信号用于不同组的组头设备之间的同步;
    所述第二组头设备,用于接收来自所述第一组头设备的所述第一同步信号。
  27. 根据权利要求26所述的通信系统,其特征在于,所述通信系统包括的组员设备,用于接收来自所述第一组头设备的所述第一同步信号,且根据所述第一指示信息,不响应所述第一同步信号,所述组员设备是所述M个组员设备中的一个,或是所述N个组员设备中的一个,或所述组员设备属于除所述第一组和所述第二组外的其他组。
  28. 一种通信装置,其特征在于,包括收发单元和处理单元,所述收发单元和所述处理单元耦合,能够执行如权利要求13~18任一项所述的方法,或执行如权利要求19~25任一项所述的方法。
  29. 一种计算机可读存储介质,其特征在于,所述计算机可读存储介质用于存储计算机 程序,当所述计算机程序在计算机上运行时,使得所述计算机执行如权利要求13~18中任意一项所述的方法,或者使得所述计算机执行如权利要求19~25中任意一项所述的方法。
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